CVE-2025-22036
- Source
- https://cve.org/CVERecord?id=CVE-2025-22036
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-22036.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2025-22036
- Downstream
- Related
- Published
- 2025-04-16T14:11:54Z
- Modified
- 2026-08-12T03:51:43Z
- 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
- exfat: fix random stack corruption after get_block
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
exfat: fix random stack corruption after get_block
When get_block is called with a buffer_head allocated on the stack, such as do_mpage_readpage, stack corruption due to buffer_head UAF may occur in the following race condition situation.
<CPU 0> <CPU 1>mpage_read_folio <> do_mpage_readpage exfat_get_block bh_read __bh_read get_bh(bh) submit_bh wait_on_buffer ... end_buffer_read_sync __end_buffer_read_notouch unlock_buffer <> ... ... ... ... <> . . another_function <> put_bh(bh) atomic_dec(bh->b_count)
- stack corruption here *
This patch returns -EAGAIN if a folio does not have buffers when bh_read needs to be called. By doing this, the caller can fallback to functions like block_read_full_folio(), create a buffer_head in the folio, and then call get_block again.
Let's do not call bh_read() with on-stack buffer_head.
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/22xxx/CVE-2025-22036.json" }- References
-
- https://git.kernel.org/stable/c/1bb7ff4204b6d4927e982cd256286c09ed4fd8ca
- https://git.kernel.org/stable/c/49b0a6ab8e528a0c1c50e37cef9b9c7c121365f2
- https://git.kernel.org/stable/c/f7447286363dc1e410bf30b87d75168f3519f9cc
- https://git.kernel.org/stable/c/f807a6bf2005740fa26b4f59c4a003dc966b9afd
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/22xxx/CVE-2025-22036.json
- https://nvd.nist.gov/vuln/detail/CVE-2025-22036
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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
-
Introduced11a347fb6cef62ce47e84b97c45f2b2497c7593bFixed49b0a6ab8e528a0c1c50e37cef9b9c7c121365f2Fixedf7447286363dc1e410bf30b87d75168f3519f9ccFixedf807a6bf2005740fa26b4f59c4a003dc966b9afdFixed1bb7ff4204b6d4927e982cd256286c09ed4fd8ca