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CVE PROGRAM SOURCE RECORD7.8 High

CVE-2023-52983

block, bfq: fix uaf for bfqq in bic_set_bfqq()

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Status
Published
Published
Updated
Assigning organization
Linux

Description

In the Linux kernel, the following vulnerability has been resolved: block, bfq: fix uaf for bfqq in bic_set_bfqq() After commit 64dc8c732f5c ("block, bfq: fix possible uaf for 'bfqq->bic'"), bic->bfqq will be accessed in bic_set_bfqq(), however, in some context bic->bfqq will be freed, and bic_set_bfqq() is called with the freed bic->bfqq. Fix the problem by always freeing bfqq after bic_set_bfqq().

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

  • 5533742c7cb1bc9b1f0bf401cc397d44a3a9e07a to < 7f77f3dab5066a7c9da73d72d1eee895ff84a8d5affected
  • 094f3d9314d67691cb21ba091c1b528f6e3c4893 to < 511c922c5bf6c8a166bea826e702336bc2424140affected
  • 761564d93c8265f65543acf0a576b32d66bfa26a to < cb1876fc33af26d00efdd473311f1b664c77c44eaffected
  • 64dc8c732f5c2b406cc752e6aaa1bd5471159cab to < b600de2d7d3a16f9007fad1bdae82a3951a26af2affected
  • b22fd72bfebda3956efc4431b60ddfc0a51e03e0affected
  • 6.0.16 to < 6.1affected

Linux Linux

Default version status: unaffected

  • 5.15.86 to < 5.15.93affected
  • 6.1.2 to < 6.1.11affected

References