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CVE PROGRAM SOURCE RECORDUnscored

CVE-2023-52462

bpf: fix check for attempt to corrupt spilled pointer

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Status
Published
Published
Updated
Assigning organization
Linux

Description

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • cdd73a5ed0840da88a3b9ad353f568e6f156d417 to < 2757f17972d87773b3677777f5682510f13c66efaffected
  • 07c286c10a9cedbd71f20269ff3a4e73d9aab2fe to < 67e6707f07354ed1acb4e65552e97c60cf9d69cfaffected
  • 27113c59b6d0a587b29ae72d4ff3f832f58b0651 to < fc3e3c50a0a4cac1463967c110686189e4a59104affected
  • 27113c59b6d0a587b29ae72d4ff3f832f58b0651 to < 8dc15b0670594543c356567a1a45b0182ec63174affected
  • 27113c59b6d0a587b29ae72d4ff3f832f58b0651 to < 40617d45ea05535105e202a8a819e388a2b1f036affected
  • 27113c59b6d0a587b29ae72d4ff3f832f58b0651 to < ab125ed3ec1c10ccc36bc98c7a4256ad114a3daeaffected
  • 5.10.163 to < 5.10.209affected
  • 5.15.86 to < 5.15.148affected

Linux Linux

Default version status: affected

  • 5.16affected
  • 0 to < 5.16unaffected
  • 5.10.209 to ≤ 5.10.*unaffected
  • 5.15.148 to ≤ 5.15.*unaffected
  • 6.1.75 to ≤ 6.1.*unaffected
  • 6.6.14 to ≤ 6.6.*unaffected
  • 6.7.2 to ≤ 6.7.*unaffected
  • 6.8 to ≤ *unaffected

References