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GHSA-Q7J6-PHCV-5JH3

Vulnerability from github – Published: 2025-12-24 12:30 – Updated: 2025-12-24 12:30

Details

In the Linux kernel, the following vulnerability has been resolved:

selinux: enable use of both GFP_KERNEL and GFP_ATOMIC in convert_context()

The following warning was triggered on a hardware environment:

SELinux: Converting 162 SID table entries... BUG: sleeping function called from invalid context at __might_sleep+0x60/0x74 0x0 in_atomic(): 1, irqs_disabled(): 128, non_block: 0, pid: 5943, name: tar CPU: 7 PID: 5943 Comm: tar Tainted: P O 5.10.0 #1 Call trace: dump_backtrace+0x0/0x1c8 show_stack+0x18/0x28 dump_stack+0xe8/0x15c mightsleep+0x168/0x17c might_sleep+0x60/0x74 __kmalloc_track_caller+0xa0/0x7dc kstrdup+0x54/0xac convert_context+0x48/0x2e4 sidtab_context_to_sid+0x1c4/0x36c security_context_to_sid_core+0x168/0x238 security_context_to_sid_default+0x14/0x24 inode_doinit_use_xattr+0x164/0x1e4 inode_doinit_with_dentry+0x1c0/0x488 selinux_d_instantiate+0x20/0x34 security_d_instantiate+0x70/0xbc d_splice_alias+0x4c/0x3c0 ext4_lookup+0x1d8/0x200 [ext4] __lookup_slow+0x12c/0x1e4 walk_component+0x100/0x200 path_lookupat+0x88/0x118 filename_lookup+0x98/0x130 user_path_at_empty+0x48/0x60 vfs_statx+0x84/0x140 vfs_fstatat+0x20/0x30 __se_sys_newfstatat+0x30/0x74 __arm64_sys_newfstatat+0x1c/0x2c el0_svc_common.constprop.0+0x100/0x184 do_el0_svc+0x1c/0x2c el0_svc+0x20/0x34 el0_sync_handler+0x80/0x17c el0_sync+0x13c/0x140 SELinux: Context system_u:object_r:pssp_rsyslog_log_t:s0:c0 is not valid (left unmapped).

It was found that within a critical section of spin_lock_irqsave in sidtab_context_to_sid(), convert_context() (hooked by sidtab_convert_params.func) might cause the process to sleep via allocating memory with GFP_KERNEL, which is problematic.

As Ondrej pointed out [1], convert_context()/sidtab_convert_params.func has another caller sidtab_convert_tree(), which is okay with GFP_KERNEL. Therefore, fix this problem by adding a gfp_t argument for convert_context()/sidtab_convert_params.func and pass GFP_KERNEL/_ATOMIC properly in individual callers.

[PM: wrap long BUG() output lines, tweak subject line]

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{
  "affected": [],
  "aliases": [
    "CVE-2022-50699"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-12-24T11:15:50Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nselinux: enable use of both GFP_KERNEL and GFP_ATOMIC in convert_context()\n\nThe following warning was triggered on a hardware environment:\n\n  SELinux: Converting 162 SID table entries...\n  BUG: sleeping function called from invalid context at\n       __might_sleep+0x60/0x74 0x0\n  in_atomic(): 1, irqs_disabled(): 128, non_block: 0, pid: 5943, name: tar\n  CPU: 7 PID: 5943 Comm: tar Tainted: P O 5.10.0 #1\n  Call trace:\n   dump_backtrace+0x0/0x1c8\n   show_stack+0x18/0x28\n   dump_stack+0xe8/0x15c\n   ___might_sleep+0x168/0x17c\n   __might_sleep+0x60/0x74\n   __kmalloc_track_caller+0xa0/0x7dc\n   kstrdup+0x54/0xac\n   convert_context+0x48/0x2e4\n   sidtab_context_to_sid+0x1c4/0x36c\n   security_context_to_sid_core+0x168/0x238\n   security_context_to_sid_default+0x14/0x24\n   inode_doinit_use_xattr+0x164/0x1e4\n   inode_doinit_with_dentry+0x1c0/0x488\n   selinux_d_instantiate+0x20/0x34\n   security_d_instantiate+0x70/0xbc\n   d_splice_alias+0x4c/0x3c0\n   ext4_lookup+0x1d8/0x200 [ext4]\n   __lookup_slow+0x12c/0x1e4\n   walk_component+0x100/0x200\n   path_lookupat+0x88/0x118\n   filename_lookup+0x98/0x130\n   user_path_at_empty+0x48/0x60\n   vfs_statx+0x84/0x140\n   vfs_fstatat+0x20/0x30\n   __se_sys_newfstatat+0x30/0x74\n   __arm64_sys_newfstatat+0x1c/0x2c\n   el0_svc_common.constprop.0+0x100/0x184\n   do_el0_svc+0x1c/0x2c\n   el0_svc+0x20/0x34\n   el0_sync_handler+0x80/0x17c\n   el0_sync+0x13c/0x140\n  SELinux: Context system_u:object_r:pssp_rsyslog_log_t:s0:c0 is\n           not valid (left unmapped).\n\nIt was found that within a critical section of spin_lock_irqsave in\nsidtab_context_to_sid(), convert_context() (hooked by\nsidtab_convert_params.func) might cause the process to sleep via\nallocating memory with GFP_KERNEL, which is problematic.\n\nAs Ondrej pointed out [1], convert_context()/sidtab_convert_params.func\nhas another caller sidtab_convert_tree(), which is okay with GFP_KERNEL.\nTherefore, fix this problem by adding a gfp_t argument for\nconvert_context()/sidtab_convert_params.func and pass GFP_KERNEL/_ATOMIC\nproperly in individual callers.\n\n[PM: wrap long BUG() output lines, tweak subject line]",
  "id": "GHSA-q7j6-phcv-5jh3",
  "modified": "2025-12-24T12:30:25Z",
  "published": "2025-12-24T12:30:25Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-50699"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2723875e9d677401d775a03a72abab7e9538c20c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/277378631d26477451424cc73982b977961f3d8b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3006766d247bc93a25b34e92fff2f75bda597e2e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/abe3c631447dcd1ba7af972fe6f054bee6f136fa"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2022-50699 (GCVE-0-2022-50699)

Vulnerability from cvelistv5 – Published: 2025-12-24 10:55 – Updated: 2026-05-11 19:23

Title

selinux: enable use of both GFP_KERNEL and GFP_ATOMIC in convert_context()

Summary

In the Linux kernel, the following vulnerability has been resolved: selinux: enable use of both GFP_KERNEL and GFP_ATOMIC in convert_context() The following warning was triggered on a hardware environment: SELinux: Converting 162 SID table entries... BUG: sleeping function called from invalid context at __might_sleep+0x60/0x74 0x0 in_atomic(): 1, irqs_disabled(): 128, non_block: 0, pid: 5943, name: tar CPU: 7 PID: 5943 Comm: tar Tainted: P O 5.10.0 #1 Call trace: dump_backtrace+0x0/0x1c8 show_stack+0x18/0x28 dump_stack+0xe8/0x15c ___might_sleep+0x168/0x17c __might_sleep+0x60/0x74 __kmalloc_track_caller+0xa0/0x7dc kstrdup+0x54/0xac convert_context+0x48/0x2e4 sidtab_context_to_sid+0x1c4/0x36c security_context_to_sid_core+0x168/0x238 security_context_to_sid_default+0x14/0x24 inode_doinit_use_xattr+0x164/0x1e4 inode_doinit_with_dentry+0x1c0/0x488 selinux_d_instantiate+0x20/0x34 security_d_instantiate+0x70/0xbc d_splice_alias+0x4c/0x3c0 ext4_lookup+0x1d8/0x200 [ext4] __lookup_slow+0x12c/0x1e4 walk_component+0x100/0x200 path_lookupat+0x88/0x118 filename_lookup+0x98/0x130 user_path_at_empty+0x48/0x60 vfs_statx+0x84/0x140 vfs_fstatat+0x20/0x30 __se_sys_newfstatat+0x30/0x74 __arm64_sys_newfstatat+0x1c/0x2c el0_svc_common.constprop.0+0x100/0x184 do_el0_svc+0x1c/0x2c el0_svc+0x20/0x34 el0_sync_handler+0x80/0x17c el0_sync+0x13c/0x140 SELinux: Context system_u:object_r:pssp_rsyslog_log_t:s0:c0 is not valid (left unmapped). It was found that within a critical section of spin_lock_irqsave in sidtab_context_to_sid(), convert_context() (hooked by sidtab_convert_params.func) might cause the process to sleep via allocating memory with GFP_KERNEL, which is problematic. As Ondrej pointed out [1], convert_context()/sidtab_convert_params.func has another caller sidtab_convert_tree(), which is okay with GFP_KERNEL. Therefore, fix this problem by adding a gfp_t argument for convert_context()/sidtab_convert_params.func and pass GFP_KERNEL/_ATOMIC properly in individual callers. [PM: wrap long BUG() output lines, tweak subject line]

Severity

No CVSS data available.

Assigner

Linux mitre root

References

4 references

URL	Tags
https://git.kernel.org/stable/c/2723875e9d677401d…
https://git.kernel.org/stable/c/3006766d247bc93a2…
https://git.kernel.org/stable/c/277378631d2647745…
https://git.kernel.org/stable/c/abe3c631447dcd1ba…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: ee1a84fdfeedfd7362e9a8a8f15fedc3482ade2d , < 2723875e9d677401d775a03a72abab7e9538c20c (git) Affected: ee1a84fdfeedfd7362e9a8a8f15fedc3482ade2d , < 3006766d247bc93a25b34e92fff2f75bda597e2e (git) Affected: ee1a84fdfeedfd7362e9a8a8f15fedc3482ade2d , < 277378631d26477451424cc73982b977961f3d8b (git) Affected: ee1a84fdfeedfd7362e9a8a8f15fedc3482ade2d , < abe3c631447dcd1ba7af972fe6f054bee6f136fa (git)
Linux	Linux	Affected: 5.0 Unaffected: 0 , < 5.0 (semver) Unaffected: 5.10.152 , ≤ 5.10.* (semver) Unaffected: 5.15.76 , ≤ 5.15.* (semver) Unaffected: 6.0.6 , ≤ 6.0.* (semver) Unaffected: 6.1 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "security/selinux/ss/services.c",
            "security/selinux/ss/sidtab.c",
            "security/selinux/ss/sidtab.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "2723875e9d677401d775a03a72abab7e9538c20c",
              "status": "affected",
              "version": "ee1a84fdfeedfd7362e9a8a8f15fedc3482ade2d",
              "versionType": "git"
            },
            {
              "lessThan": "3006766d247bc93a25b34e92fff2f75bda597e2e",
              "status": "affected",
              "version": "ee1a84fdfeedfd7362e9a8a8f15fedc3482ade2d",
              "versionType": "git"
            },
            {
              "lessThan": "277378631d26477451424cc73982b977961f3d8b",
              "status": "affected",
              "version": "ee1a84fdfeedfd7362e9a8a8f15fedc3482ade2d",
              "versionType": "git"
            },
            {
              "lessThan": "abe3c631447dcd1ba7af972fe6f054bee6f136fa",
              "status": "affected",
              "version": "ee1a84fdfeedfd7362e9a8a8f15fedc3482ade2d",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "security/selinux/ss/services.c",
            "security/selinux/ss/sidtab.c",
            "security/selinux/ss/sidtab.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.0"
            },
            {
              "lessThan": "5.0",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.152",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.76",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.0.*",
              "status": "unaffected",
              "version": "6.0.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.152",
                  "versionStartIncluding": "5.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.76",
                  "versionStartIncluding": "5.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.0.6",
                  "versionStartIncluding": "5.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1",
                  "versionStartIncluding": "5.0",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nselinux: enable use of both GFP_KERNEL and GFP_ATOMIC in convert_context()\n\nThe following warning was triggered on a hardware environment:\n\n  SELinux: Converting 162 SID table entries...\n  BUG: sleeping function called from invalid context at\n       __might_sleep+0x60/0x74 0x0\n  in_atomic(): 1, irqs_disabled(): 128, non_block: 0, pid: 5943, name: tar\n  CPU: 7 PID: 5943 Comm: tar Tainted: P O 5.10.0 #1\n  Call trace:\n   dump_backtrace+0x0/0x1c8\n   show_stack+0x18/0x28\n   dump_stack+0xe8/0x15c\n   ___might_sleep+0x168/0x17c\n   __might_sleep+0x60/0x74\n   __kmalloc_track_caller+0xa0/0x7dc\n   kstrdup+0x54/0xac\n   convert_context+0x48/0x2e4\n   sidtab_context_to_sid+0x1c4/0x36c\n   security_context_to_sid_core+0x168/0x238\n   security_context_to_sid_default+0x14/0x24\n   inode_doinit_use_xattr+0x164/0x1e4\n   inode_doinit_with_dentry+0x1c0/0x488\n   selinux_d_instantiate+0x20/0x34\n   security_d_instantiate+0x70/0xbc\n   d_splice_alias+0x4c/0x3c0\n   ext4_lookup+0x1d8/0x200 [ext4]\n   __lookup_slow+0x12c/0x1e4\n   walk_component+0x100/0x200\n   path_lookupat+0x88/0x118\n   filename_lookup+0x98/0x130\n   user_path_at_empty+0x48/0x60\n   vfs_statx+0x84/0x140\n   vfs_fstatat+0x20/0x30\n   __se_sys_newfstatat+0x30/0x74\n   __arm64_sys_newfstatat+0x1c/0x2c\n   el0_svc_common.constprop.0+0x100/0x184\n   do_el0_svc+0x1c/0x2c\n   el0_svc+0x20/0x34\n   el0_sync_handler+0x80/0x17c\n   el0_sync+0x13c/0x140\n  SELinux: Context system_u:object_r:pssp_rsyslog_log_t:s0:c0 is\n           not valid (left unmapped).\n\nIt was found that within a critical section of spin_lock_irqsave in\nsidtab_context_to_sid(), convert_context() (hooked by\nsidtab_convert_params.func) might cause the process to sleep via\nallocating memory with GFP_KERNEL, which is problematic.\n\nAs Ondrej pointed out [1], convert_context()/sidtab_convert_params.func\nhas another caller sidtab_convert_tree(), which is okay with GFP_KERNEL.\nTherefore, fix this problem by adding a gfp_t argument for\nconvert_context()/sidtab_convert_params.func and pass GFP_KERNEL/_ATOMIC\nproperly in individual callers.\n\n[PM: wrap long BUG() output lines, tweak subject line]"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T19:23:44.480Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/2723875e9d677401d775a03a72abab7e9538c20c"
        },
        {
          "url": "https://git.kernel.org/stable/c/3006766d247bc93a25b34e92fff2f75bda597e2e"
        },
        {
          "url": "https://git.kernel.org/stable/c/277378631d26477451424cc73982b977961f3d8b"
        },
        {
          "url": "https://git.kernel.org/stable/c/abe3c631447dcd1ba7af972fe6f054bee6f136fa"
        }
      ],
      "title": "selinux: enable use of both GFP_KERNEL and GFP_ATOMIC in convert_context()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-50699",
    "datePublished": "2025-12-24T10:55:15.468Z",
    "dateReserved": "2025-12-24T10:53:15.517Z",
    "dateUpdated": "2026-05-11T19:23:44.480Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

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Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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GHSA-Q7J6-PHCV-5JH3

CVE-2022-50699 (GCVE-0-2022-50699)

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