CVE-2024-42315
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2024-42315
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2024-42315.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2024-42315
- Downstream
- Related
- Published
- 2024-08-17T09:09:23Z
- Modified
- 2025-10-09T14:28:46.738324Z
- Summary
- exfat: fix potential deadlock on __exfat_get_dentry_set
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
exfat: fix potential deadlock on _exfatgetdentryset
When accessing a file with more entries than ESMAXENTRYNUM, the bh-array is allocated in _exfatgetentryset. The problem is that the bh-array is allocated with GFPKERNEL. It does not make sense. In the following cases, a deadlock for sbi->s_lock between the two processes may occur.
CPU0 CPU1 ---- ----kswapd balancepgdat lock(fsreclaim) exfatiterate lock(&sbi->slock) exfatreaddir exfatgetuninamefromextentry exfatgetdentryset _exfatgetdentryset kmallocarray ... lock(fsreclaim) ... evict exfatevictinode lock(&sbi->slock)
To fix this, let's allocate bh-array with GFP_NOFS.
- References
-
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- https://git.kernel.org/stable/c/1d1970493c289e3f44b9ec847ed26a5dbdf56a62
- https://git.kernel.org/stable/c/632fb232b6bbf8277edcbe9ecd4b4d98ecb122eb
- https://git.kernel.org/stable/c/89fc548767a2155231128cb98726d6d2ea1256c9
- https://git.kernel.org/stable/c/a7ac198f8dba791e3144c4da48a5a9b95773ee4b
- https://git.kernel.org/stable/c/c052f775ee6ccacd3c97e4cf41a2a657e63d4259
- https://git.kernel.org/stable/c/cd1c7858641384191ff7033fb1fc65dfcd559c6f
Affected packages
Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Affected ranges
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introducedbd3bdb9e0d656f760b11d0c638d35d7f7068144dFixed632fb232b6bbf8277edcbe9ecd4b4d98ecb122eb
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced92dcd7d6c6068bf4fd35a6f64d606e27d634807eFixedc052f775ee6ccacd3c97e4cf41a2a657e63d4259
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introducedd8fe01ad2d8ab33aaf8f2efad9e8f1dae11c4b0cFixedcd1c7858641384191ff7033fb1fc65dfcd559c6f
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduceda3ff29a95fde16906304455aa8c0bd84eb770258Fixeda7ac198f8dba791e3144c4da48a5a9b95773ee4b
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduceda3ff29a95fde16906304455aa8c0bd84eb770258Fixed1d1970493c289e3f44b9ec847ed26a5dbdf56a62
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduceda3ff29a95fde16906304455aa8c0bd84eb770258Fixed89fc548767a2155231128cb98726d6d2ea1256c9
Affected versions
v5.*
v6.*
Linux / Kernel
Package
- Name
- Kernel