CVE-2023-52621 (GCVE-0-2023-52621)

Vulnerability from cvelistv5 – Published: 2024-03-26 17:19 – Updated: 2026-01-05 10:16
VLAI?
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.
Assigner
References
Impacted products
Vendor Product Version
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)
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    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)
Create a notification for this product.
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  }
}


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Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

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.



Detection rules are retrieved from Rulezet.