AZL-42208
See a problem?- Import Source
- https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-42208.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/AZL-42208
- Upstream
- Published
- 2024-05-21T16:15:14Z
- Modified
- 2026-04-01T05:14:31.036925Z
- Severity
-
- 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
- Summary
- CVE-2023-52752 affecting package kernel for versions less than 5.15.167.1-2
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
smb: client: fix use-after-free bug in cifsdebugdataprocshow()
Skip SMB sessions that are being teared down (e.g. @ses->sesstatus == SESEXITING) in cifsdebugdataprocshow() to avoid use-after-free in @ses.
This fixes the following GPF when reading from /proc/fs/cifs/DebugData while mounting and umounting
[ 816.251274] general protection fault, probably for non-canonical address 0x6b6b6b6b6b6b6d81: 0000 [#1] PREEMPT SMP NOPTI ... [ 816.260138] Call Trace: [ 816.260329] <TASK> [ 816.260499] ? dieaddr+0x36/0x90 [ 816.260762] ? excgeneralprotection+0x1b3/0x410 [ 816.261126] ? asmexcgeneralprotection+0x26/0x30 [ 816.261502] ? cifsdebugtcon+0xbd/0x240 [cifs] [ 816.261878] ? cifsdebugtcon+0xab/0x240 [cifs] [ 816.262249] cifsdebugdataprocshow+0x516/0xdb0 [cifs] [ 816.262689] ? seqreaditer+0x379/0x470 [ 816.262995] seqreaditer+0x118/0x470 [ 816.263291] procregreaditer+0x53/0x90 [ 816.263596] ? srsoaliasreturnthunk+0x5/0x7f [ 816.263945] vfsread+0x201/0x350 [ 816.264211] ksysread+0x75/0x100 [ 816.264472] dosyscall64+0x3f/0x90 [ 816.264750] entrySYSCALL64afterhwframe+0x6e/0xd8 [ 816.265135] RIP: 0033:0x7fd5e669d381
- References