SUSE-SU-2025:02444-1

Vulnerability from csaf_suse - Published: 2025-07-21 13:04 - Updated: 2026-09-20 17:33
Summary
Security update for the Linux Kernel (Live Patch 36 for SLE 15 SP4)
Severity
Important
Notes
Title of the patch: Security update for the Linux Kernel (Live Patch 36 for SLE 15 SP4)
Description of the patch: This update for the Linux Kernel 5.14.21-150400_24_150 fixes several issues. The following security issues were fixed: - CVE-2022-49465: blk-throttle: Set BIO_THROTTLED when bio has been throttled (bsc#1238920). - CVE-2025-21772: partitions: mac: fix handling of bogus partition table (bsc#1238912). - CVE-2024-56558: nfsd: make sure exp active before svc_export_show (bsc#1243648).
Patchnames: SUSE-2025-2444,SUSE-SLE-Module-Live-Patching-15-SP4-2025-2444
Terms of use: CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).
CVE-2022-49465
7 (High)
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected products
Product Identifier Version Remediation
Unresolved product id: SUSE Linux Enterprise Live Patching 15 SP4:kernel-livepatch-5_14_21-150400_24_150-default-0:3-150400.2.1.ppc64le —
Vendor Fix
Unresolved product id: SUSE Linux Enterprise Live Patching 15 SP4:kernel-livepatch-5_14_21-150400_24_150-default-0:3-150400.2.1.s390x —
Vendor Fix
Unresolved product id: SUSE Linux Enterprise Live Patching 15 SP4:kernel-livepatch-5_14_21-150400_24_150-default-0:3-150400.2.1.x86_64 —
Vendor Fix
Threats
Impact important
CVE-2024-56558
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Affected products
Recommended 3 products, the same list as for CVE-2022-49465
Threats
Impact moderate
CVE-2025-21772
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected products
Recommended 3 products, the same list as for CVE-2022-49465
Threats
Impact important
References
To clipboard 

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  "vulnerabilities": [
    {
      "cve": "CVE-2022-49465",
      "ids": [
        {
          "system_name": "SUSE CVE Page",
          "text": "https://www.suse.com/security/cve/CVE-2022-49465"
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "In the Linux kernel, the following vulnerability has been resolved:\n\nblk-throttle: Set BIO_THROTTLED when bio has been throttled\n\n1.In current process, all bio will set the BIO_THROTTLED flag\nafter __blk_throtl_bio().\n\n2.If bio needs to be throttled, it will start the timer and\nstop submit bio directly. Bio will submit in\nblk_throtl_dispatch_work_fn() when the timer expires.But in\nthe current process, if bio is throttled. The BIO_THROTTLED\nwill be set to bio after timer start. If the bio has been\ncompleted, it may cause use-after-free blow.\n\nBUG: KASAN: use-after-free in blk_throtl_bio+0x12f0/0x2c70\nRead of size 2 at addr ffff88801b8902d4 by task fio/26380\n\n dump_stack+0x9b/0xce\n print_address_description.constprop.6+0x3e/0x60\n kasan_report.cold.9+0x22/0x3a\n blk_throtl_bio+0x12f0/0x2c70\n submit_bio_checks+0x701/0x1550\n submit_bio_noacct+0x83/0xc80\n submit_bio+0xa7/0x330\n mpage_readahead+0x380/0x500\n read_pages+0x1c1/0xbf0\n page_cache_ra_unbounded+0x471/0x6f0\n do_page_cache_ra+0xda/0x110\n ondemand_readahead+0x442/0xae0\n page_cache_async_ra+0x210/0x300\n generic_file_buffered_read+0x4d9/0x2130\n generic_file_read_iter+0x315/0x490\n blkdev_read_iter+0x113/0x1b0\n aio_read+0x2ad/0x450\n io_submit_one+0xc8e/0x1d60\n __se_sys_io_submit+0x125/0x350\n do_syscall_64+0x2d/0x40\n entry_SYSCALL_64_after_hwframe+0x44/0xa9\n\nAllocated by task 26380:\n kasan_save_stack+0x19/0x40\n __kasan_kmalloc.constprop.2+0xc1/0xd0\n kmem_cache_alloc+0x146/0x440\n mempool_alloc+0x125/0x2f0\n bio_alloc_bioset+0x353/0x590\n mpage_alloc+0x3b/0x240\n do_mpage_readpage+0xddf/0x1ef0\n mpage_readahead+0x264/0x500\n read_pages+0x1c1/0xbf0\n page_cache_ra_unbounded+0x471/0x6f0\n do_page_cache_ra+0xda/0x110\n ondemand_readahead+0x442/0xae0\n page_cache_async_ra+0x210/0x300\n generic_file_buffered_read+0x4d9/0x2130\n generic_file_read_iter+0x315/0x490\n blkdev_read_iter+0x113/0x1b0\n aio_read+0x2ad/0x450\n io_submit_one+0xc8e/0x1d60\n __se_sys_io_submit+0x125/0x350\n do_syscall_64+0x2d/0x40\n entry_SYSCALL_64_after_hwframe+0x44/0xa9\n\nFreed by task 0:\n kasan_save_stack+0x19/0x40\n kasan_set_track+0x1c/0x30\n kasan_set_free_info+0x1b/0x30\n __kasan_slab_free+0x111/0x160\n kmem_cache_free+0x94/0x460\n mempool_free+0xd6/0x320\n bio_free+0xe0/0x130\n bio_put+0xab/0xe0\n bio_endio+0x3a6/0x5d0\n blk_update_request+0x590/0x1370\n scsi_end_request+0x7d/0x400\n scsi_io_completion+0x1aa/0xe50\n scsi_softirq_done+0x11b/0x240\n blk_mq_complete_request+0xd4/0x120\n scsi_mq_done+0xf0/0x200\n virtscsi_vq_done+0xbc/0x150\n vring_interrupt+0x179/0x390\n __handle_irq_event_percpu+0xf7/0x490\n handle_irq_event_percpu+0x7b/0x160\n handle_irq_event+0xcc/0x170\n handle_edge_irq+0x215/0xb20\n common_interrupt+0x60/0x120\n asm_common_interrupt+0x1e/0x40\n\nFix this by move BIO_THROTTLED set into the queue_lock.",
          "title": "CVE description"
        }
      ],
      "product_status": {
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          "summary": "SUSE Bug 1238919 for CVE-2022-49465",
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        }
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          ]
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          "date": "2025-07-21T13:04:21Z",
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      "title": "CVE-2022-49465"
    },
    {
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      "ids": [
        {
          "system_name": "SUSE CVE Page",
          "text": "https://www.suse.com/security/cve/CVE-2024-56558"
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "In the Linux kernel, the following vulnerability has been resolved:\n\nnfsd: make sure exp active before svc_export_show\n\nThe function `e_show` was called with protection from RCU. This only\nensures that `exp` will not be freed. Therefore, the reference count for\n`exp` can drop to zero, which will trigger a refcount use-after-free\nwarning when `exp_get` is called. To resolve this issue, use\n`cache_get_rcu` to ensure that `exp` remains active.\n\n------------[ cut here ]------------\nrefcount_t: addition on 0; use-after-free.\nWARNING: CPU: 3 PID: 819 at lib/refcount.c:25\nrefcount_warn_saturate+0xb1/0x120\nCPU: 3 UID: 0 PID: 819 Comm: cat Not tainted 6.12.0-rc3+ #1\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS\n1.16.1-2.fc37 04/01/2014\nRIP: 0010:refcount_warn_saturate+0xb1/0x120\n...\nCall Trace:\n \u003cTASK\u003e\n e_show+0x20b/0x230 [nfsd]\n seq_read_iter+0x589/0x770\n seq_read+0x1e5/0x270\n vfs_read+0x125/0x530\n ksys_read+0xc1/0x160\n do_syscall_64+0x5f/0x170\n entry_SYSCALL_64_after_hwframe+0x76/0x7e",
          "title": "CVE description"
        }
      ],
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          "SUSE Linux Enterprise Live Patching 15 SP4:kernel-livepatch-5_14_21-150400_24_150-default-0:3-150400.2.1.s390x",
          "SUSE Linux Enterprise Live Patching 15 SP4:kernel-livepatch-5_14_21-150400_24_150-default-0:3-150400.2.1.x86_64"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "CVE-2024-56558",
          "url": "https://www.suse.com/security/cve/CVE-2024-56558"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1235100 for CVE-2024-56558",
          "url": "https://bugzilla.suse.com/1235100"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1237479 for CVE-2024-56558",
          "url": "https://bugzilla.suse.com/1237479"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1243648 for CVE-2024-56558",
          "url": "https://bugzilla.suse.com/1243648"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n",
          "product_ids": [
            "SUSE Linux Enterprise Live Patching 15 SP4:kernel-livepatch-5_14_21-150400_24_150-default-0:3-150400.2.1.ppc64le",
            "SUSE Linux Enterprise Live Patching 15 SP4:kernel-livepatch-5_14_21-150400_24_150-default-0:3-150400.2.1.s390x",
            "SUSE Linux Enterprise Live Patching 15 SP4:kernel-livepatch-5_14_21-150400_24_150-default-0:3-150400.2.1.x86_64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 5.5,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "products": [
            "SUSE Linux Enterprise Live Patching 15 SP4:kernel-livepatch-5_14_21-150400_24_150-default-0:3-150400.2.1.ppc64le",
            "SUSE Linux Enterprise Live Patching 15 SP4:kernel-livepatch-5_14_21-150400_24_150-default-0:3-150400.2.1.s390x",
            "SUSE Linux Enterprise Live Patching 15 SP4:kernel-livepatch-5_14_21-150400_24_150-default-0:3-150400.2.1.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "date": "2025-07-21T13:04:21Z",
          "details": "moderate"
        }
      ],
      "title": "CVE-2024-56558"
    },
    {
      "cve": "CVE-2025-21772",
      "ids": [
        {
          "system_name": "SUSE CVE Page",
          "text": "https://www.suse.com/security/cve/CVE-2025-21772"
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "In the Linux kernel, the following vulnerability has been resolved:\n\npartitions: mac: fix handling of bogus partition table\n\nFix several issues in partition probing:\n\n - The bailout for a bad partoffset must use put_dev_sector(), since the\n   preceding read_part_sector() succeeded.\n - If the partition table claims a silly sector size like 0xfff bytes\n   (which results in partition table entries straddling sector boundaries),\n   bail out instead of accessing out-of-bounds memory.\n - We must not assume that the partition table contains proper NUL\n   termination - use strnlen() and strncmp() instead of strlen() and\n   strcmp().",
          "title": "CVE description"
        }
      ],
      "product_status": {
        "recommended": [
          "SUSE Linux Enterprise Live Patching 15 SP4:kernel-livepatch-5_14_21-150400_24_150-default-0:3-150400.2.1.ppc64le",
          "SUSE Linux Enterprise Live Patching 15 SP4:kernel-livepatch-5_14_21-150400_24_150-default-0:3-150400.2.1.s390x",
          "SUSE Linux Enterprise Live Patching 15 SP4:kernel-livepatch-5_14_21-150400_24_150-default-0:3-150400.2.1.x86_64"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "CVE-2025-21772",
          "url": "https://www.suse.com/security/cve/CVE-2025-21772"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1238911 for CVE-2025-21772",
          "url": "https://bugzilla.suse.com/1238911"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1238912 for CVE-2025-21772",
          "url": "https://bugzilla.suse.com/1238912"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n",
          "product_ids": [
            "SUSE Linux Enterprise Live Patching 15 SP4:kernel-livepatch-5_14_21-150400_24_150-default-0:3-150400.2.1.ppc64le",
            "SUSE Linux Enterprise Live Patching 15 SP4:kernel-livepatch-5_14_21-150400_24_150-default-0:3-150400.2.1.s390x",
            "SUSE Linux Enterprise Live Patching 15 SP4:kernel-livepatch-5_14_21-150400_24_150-default-0:3-150400.2.1.x86_64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "SUSE Linux Enterprise Live Patching 15 SP4:kernel-livepatch-5_14_21-150400_24_150-default-0:3-150400.2.1.ppc64le",
            "SUSE Linux Enterprise Live Patching 15 SP4:kernel-livepatch-5_14_21-150400_24_150-default-0:3-150400.2.1.s390x",
            "SUSE Linux Enterprise Live Patching 15 SP4:kernel-livepatch-5_14_21-150400_24_150-default-0:3-150400.2.1.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "date": "2025-07-21T13:04:21Z",
          "details": "important"
        }
      ],
      "title": "CVE-2025-21772"
    }
  ]
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • 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.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.