CVE-2023-52621 (GCVE-0-2023-52621)
Vulnerability from cvelistv5 – Published: 2024-03-26 17:19 – Updated: 2026-05-11 19:30
VLAI
EPSS
VEX
Title
bpf: Check rcu_read_lock_trace_held() before calling bpf map helpers
Summary
In the Linux kernel, the following vulnerability has been resolved:
bpf: Check rcu_read_lock_trace_held() before calling bpf map helpers
These three bpf_map_{lookup,update,delete}_elem() helpers are also
available for sleepable bpf program, so add the corresponding lock
assertion for sleepable bpf program, otherwise the following warning
will be reported when a sleepable bpf program manipulates bpf map under
interpreter mode (aka bpf_jit_enable=0):
WARNING: CPU: 3 PID: 4985 at kernel/bpf/helpers.c:40 ......
CPU: 3 PID: 4985 Comm: test_progs Not tainted 6.6.0+ #2
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996) ......
RIP: 0010:bpf_map_lookup_elem+0x54/0x60
......
Call Trace:
<TASK>
? __warn+0xa5/0x240
? bpf_map_lookup_elem+0x54/0x60
? report_bug+0x1ba/0x1f0
? handle_bug+0x40/0x80
? exc_invalid_op+0x18/0x50
? asm_exc_invalid_op+0x1b/0x20
? __pfx_bpf_map_lookup_elem+0x10/0x10
? rcu_lockdep_current_cpu_online+0x65/0xb0
? rcu_is_watching+0x23/0x50
? bpf_map_lookup_elem+0x54/0x60
? __pfx_bpf_map_lookup_elem+0x10/0x10
___bpf_prog_run+0x513/0x3b70
__bpf_prog_run32+0x9d/0xd0
? __bpf_prog_enter_sleepable_recur+0xad/0x120
? __bpf_prog_enter_sleepable_recur+0x3e/0x120
bpf_trampoline_6442580665+0x4d/0x1000
__x64_sys_getpgid+0x5/0x30
? do_syscall_64+0x36/0xb0
entry_SYSCALL_64_after_hwframe+0x6e/0x76
</TASK>
Severity
No CVSS data available.
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-09-10 15:54 UTC
Assigner
References
7 references
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
1e6c62a8821557720a9b2ea9617359b264f2f67c , < 82f2df94dac1aa9b879e74d1f82ba1b631bdc612
(git)
Affected: 1e6c62a8821557720a9b2ea9617359b264f2f67c , < 3516f93cc63d956e1b290ae4b7bf2586074535a0 (git) Affected: 1e6c62a8821557720a9b2ea9617359b264f2f67c , < d6d6fe4bb105595118f12abeed4a7bdd450853f3 (git) Affected: 1e6c62a8821557720a9b2ea9617359b264f2f67c , < 483cb92334cd7f1d5387dccc0ab5d595d27a669d (git) Affected: 1e6c62a8821557720a9b2ea9617359b264f2f67c , < c7f1b6146f4a46d727c0d046284c28b6882c6304 (git) Affected: 1e6c62a8821557720a9b2ea9617359b264f2f67c , < 169410eba271afc9f0fb476d996795aa26770c6d (git) |
guessed | |
| Linux | Linux |
Affected:
5.10
Unaffected: 0 , < 5.10 (semver) Unaffected: 5.10.237 , ≤ 5.10.* (semver) Unaffected: 5.15.181 , ≤ 5.15.* (semver) Unaffected: 6.1.77 , ≤ 6.1.* (semver) Unaffected: 6.6.16 , ≤ 6.6.* (semver) Unaffected: 6.7.4 , ≤ 6.7.* (semver) Unaffected: 6.8 , ≤ * (original_commit_for_fix) |
guessed |
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Estos tres ayudantes de bpf_map_{lookup,update,delete}_elem() tambi\u00e9n est\u00e1n disponibles para el programa bpf que se puede dormir, as\u00ed que agregue el bloqueo correspondiente. aserci\u00f3n para el programa bpf con capacidad para dormir; de lo contrario, se informar\u00e1 la siguiente advertencia cuando un programa bpf con capacidad para dormir manipule el mapa bpf en modo int\u00e9rprete (tambi\u00e9n conocido como bpf_jit_enable=0): ADVERTENCIA: CPU: 3 PID: 4985 en kernel/bpf/helpers.c:40. ..... CPU: 3 PID: 4985 Comm: test_progs Not tainted 6.6.0+ #2 Nombre del hardware: PC est\u00e1ndar QEMU (i440FX + PIIX, 1996) ...... RIP: 0010:bpf_map_lookup_elem+0x54/0x60 ...... Seguimiento de llamadas: ? __advertir+0xa5/0x240 ? bpf_map_lookup_elem+0x54/0x60? report_bug+0x1ba/0x1f0? handle_bug+0x40/0x80? exc_invalid_op+0x18/0x50? asm_exc_invalid_op+0x1b/0x20? __pfx_bpf_map_lookup_elem+0x10/0x10 ? rcu_lockdep_current_cpu_online+0x65/0xb0? rcu_is_watching+0x23/0x50? bpf_map_lookup_elem+0x54/0x60? __pfx_bpf_map_lookup_elem+0x10/0x10 ___bpf_prog_run+0x513/0x3b70 __bpf_prog_run32+0x9d/0xd0 ? __bpf_prog_enter_sleepable_recur+0xad/0x120 ? __bpf_prog_enter_sleepable_recur+0x3e/0x120 bpf_trampoline_6442580665+0x4d/0x1000 __x64_sys_getpgid+0x5/0x30 ? do_syscall_64+0x36/0xb0 entrada_SYSCALL_64_after_hwframe+0x6e/0x76 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Coordinator\",\"version\":\"2.0.3\"}}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-617\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"FA6FEEC2-9F11-4643-8827-749718254FED\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.10\",\"versionEndExcluding\":\"5.10.237\",\"matchCriteriaId\":\"ADF07DB8-E560-4CDE-8E9C-2297AFF73222\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.11\",\"versionEndExcluding\":\"5.15.181\",\"matchCriteriaId\":\"12331C9E-F601-4EFC-899E-369F98DCC70B\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"6.1.77\",\"matchCriteriaId\":\"0FA28946-970D-4F4D-B759-4E77B28809B5\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2\",\"versionEndExcluding\":\"6.6.16\",\"matchCriteriaId\":\"A5007D6A-4B58-423A-8A3A-A1A656A263C8\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7\",\"versionEndExcluding\":\"6.7.4\",\"matchCriteriaId\":\"848BC44C-9D25-4557-A50A-4B8BF310FA78\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/169410eba271afc9f0fb476d996795aa26770c6d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/3516f93cc63d956e1b290ae4b7bf2586074535a0\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/483cb92334cd7f1d5387dccc0ab5d595d27a669d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/82f2df94dac1aa9b879e74d1f82ba1b631bdc612\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/c7f1b6146f4a46d727c0d046284c28b6882c6304\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/d6d6fe4bb105595118f12abeed4a7bdd450853f3\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/169410eba271afc9f0fb476d996795aa26770c6d\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/483cb92334cd7f1d5387dccc0ab5d595d27a669d\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/c7f1b6146f4a46d727c0d046284c28b6882c6304\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/d6d6fe4bb105595118f12abeed4a7bdd450853f3\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Mailing List\",\"Third Party Advisory\"]}]}}",
"redhat_vex": {
"aggregate_severity": "Low",
"current_release_date": "2026-06-28T07:57:07+00:00",
"cve": "CVE-2023-52621",
"id": "CVE-2023-52621",
"initial_release_date": "2023-01-01T00:00:00+00:00",
"product_status:fixed": "280",
"product_status:known_affected": "112",
"product_status:known_not_affected": "8",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: bpf: Check rcu_read_lock_trace_held() before calling bpf map helpers",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2023/cve-2023-52621.json",
"version": "3"
},
"vulnrichment": {
"containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://git.kernel.org/stable/c/d6d6fe4bb105595118f12abeed4a7bdd450853f3\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/483cb92334cd7f1d5387dccc0ab5d595d27a669d\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/c7f1b6146f4a46d727c0d046284c28b6882c6304\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/169410eba271afc9f0fb476d996795aa26770c6d\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html\"}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2025-11-03T19:28:46.555Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2023-52621\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-09-10T15:54:18.779612Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-09-11T12:42:19.759Z\"}}], \"cna\": {\"title\": \"bpf: Check rcu_read_lock_trace_held() before calling bpf map helpers\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"1e6c62a8821557720a9b2ea9617359b264f2f67c\", \"lessThan\": \"82f2df94dac1aa9b879e74d1f82ba1b631bdc612\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"1e6c62a8821557720a9b2ea9617359b264f2f67c\", \"lessThan\": \"3516f93cc63d956e1b290ae4b7bf2586074535a0\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"1e6c62a8821557720a9b2ea9617359b264f2f67c\", \"lessThan\": \"d6d6fe4bb105595118f12abeed4a7bdd450853f3\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"1e6c62a8821557720a9b2ea9617359b264f2f67c\", \"lessThan\": \"483cb92334cd7f1d5387dccc0ab5d595d27a669d\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"1e6c62a8821557720a9b2ea9617359b264f2f67c\", \"lessThan\": \"c7f1b6146f4a46d727c0d046284c28b6882c6304\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"1e6c62a8821557720a9b2ea9617359b264f2f67c\", \"lessThan\": \"169410eba271afc9f0fb476d996795aa26770c6d\", \"versionType\": \"git\"}], \"programFiles\": [\"kernel/bpf/helpers.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"5.10\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"5.10\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"5.10.237\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.181\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1.77\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.16\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.7.4\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.7.*\"}, {\"status\": \"unaffected\", \"version\": \"6.8\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"kernel/bpf/helpers.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/82f2df94dac1aa9b879e74d1f82ba1b631bdc612\"}, {\"url\": \"https://git.kernel.org/stable/c/3516f93cc63d956e1b290ae4b7bf2586074535a0\"}, {\"url\": \"https://git.kernel.org/stable/c/d6d6fe4bb105595118f12abeed4a7bdd450853f3\"}, {\"url\": \"https://git.kernel.org/stable/c/483cb92334cd7f1d5387dccc0ab5d595d27a669d\"}, {\"url\": \"https://git.kernel.org/stable/c/c7f1b6146f4a46d727c0d046284c28b6882c6304\"}, {\"url\": \"https://git.kernel.org/stable/c/169410eba271afc9f0fb476d996795aa26770c6d\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nbpf: Check rcu_read_lock_trace_held() before calling bpf map helpers\\n\\nThese three bpf_map_{lookup,update,delete}_elem() helpers are also\\navailable for sleepable bpf program, so add the corresponding lock\\nassertion for sleepable bpf program, otherwise the following warning\\nwill be reported when a sleepable bpf program manipulates bpf map under\\ninterpreter mode (aka bpf_jit_enable=0):\\n\\n WARNING: CPU: 3 PID: 4985 at kernel/bpf/helpers.c:40 ......\\n CPU: 3 PID: 4985 Comm: test_progs Not tainted 6.6.0+ #2\\n Hardware name: QEMU Standard PC (i440FX + PIIX, 1996) ......\\n RIP: 0010:bpf_map_lookup_elem+0x54/0x60\\n ......\\n Call Trace:\\n \u003cTASK\u003e\\n ? __warn+0xa5/0x240\\n ? bpf_map_lookup_elem+0x54/0x60\\n ? report_bug+0x1ba/0x1f0\\n ? handle_bug+0x40/0x80\\n ? exc_invalid_op+0x18/0x50\\n ? asm_exc_invalid_op+0x1b/0x20\\n ? __pfx_bpf_map_lookup_elem+0x10/0x10\\n ? rcu_lockdep_current_cpu_online+0x65/0xb0\\n ? rcu_is_watching+0x23/0x50\\n ? bpf_map_lookup_elem+0x54/0x60\\n ? __pfx_bpf_map_lookup_elem+0x10/0x10\\n ___bpf_prog_run+0x513/0x3b70\\n __bpf_prog_run32+0x9d/0xd0\\n ? __bpf_prog_enter_sleepable_recur+0xad/0x120\\n ? __bpf_prog_enter_sleepable_recur+0x3e/0x120\\n bpf_trampoline_6442580665+0x4d/0x1000\\n __x64_sys_getpgid+0x5/0x30\\n ? do_syscall_64+0x36/0xb0\\n entry_SYSCALL_64_after_hwframe+0x6e/0x76\\n \u003c/TASK\u003e\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.237\", \"versionStartIncluding\": \"5.10\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.181\", \"versionStartIncluding\": \"5.10\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.77\", \"versionStartIncluding\": \"5.10\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.16\", \"versionStartIncluding\": \"5.10\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.7.4\", \"versionStartIncluding\": \"5.10\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.8\", \"versionStartIncluding\": \"5.10\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-01-05T10:16:44.783Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2023-52621\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-01-05T10:16:44.783Z\", \"dateReserved\": \"2024-03-06T09:52:12.090Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-03-26T17:19:23.208Z\", \"assignerShortName\": \"Linux\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
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.
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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.
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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