CVE-2023-52462 (GCVE-0-2023-52462)

Vulnerability from cvelistv5 – Published: 2024-02-23 14:46 – Updated: 2025-05-04 07:37
VLAI?
Title
bpf: fix check for attempt to corrupt spilled pointer
Summary
In the Linux kernel, the following vulnerability has been resolved: bpf: fix check for attempt to corrupt spilled pointer When register is spilled onto a stack as a 1/2/4-byte register, we set slot_type[BPF_REG_SIZE - 1] (plus potentially few more below it, depending on actual spill size). So to check if some stack slot has spilled register we need to consult slot_type[7], not slot_type[0]. To avoid the need to remember and double-check this in the future, just use is_spilled_reg() helper.
Severity ?
No CVSS data available.
CWE
  • CWE-476 - NULL Pointer Dereference
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: cdd73a5ed0840da88a3b9ad353f568e6f156d417 , < 2757f17972d87773b3677777f5682510f13c66ef (git)
Affected: 07c286c10a9cedbd71f20269ff3a4e73d9aab2fe , < 67e6707f07354ed1acb4e65552e97c60cf9d69cf (git)
Affected: 27113c59b6d0a587b29ae72d4ff3f832f58b0651 , < fc3e3c50a0a4cac1463967c110686189e4a59104 (git)
Affected: 27113c59b6d0a587b29ae72d4ff3f832f58b0651 , < 8dc15b0670594543c356567a1a45b0182ec63174 (git)
Affected: 27113c59b6d0a587b29ae72d4ff3f832f58b0651 , < 40617d45ea05535105e202a8a819e388a2b1f036 (git)
Affected: 27113c59b6d0a587b29ae72d4ff3f832f58b0651 , < ab125ed3ec1c10ccc36bc98c7a4256ad114a3dae (git)
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    Linux Linux Affected: 5.16
Unaffected: 0 , < 5.16 (semver)
Unaffected: 5.10.209 , ≤ 5.10.* (semver)
Unaffected: 5.15.148 , ≤ 5.15.* (semver)
Unaffected: 6.1.75 , ≤ 6.1.* (semver)
Unaffected: 6.6.14 , ≤ 6.6.* (semver)
Unaffected: 6.7.2 , ≤ 6.7.* (semver)
Unaffected: 6.8 , ≤ * (original_commit_for_fix)
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  • 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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