CVE-2025-22036: Linux hwe edge · In the Linux kernel, the following vulnerability has been resolved: exfat: fix random stack corruption after get_block When get_block is called with
Affects linux-hwe-edgeSource GCVE Database
Not known to be exploited · CVSS 7.8 High : upgrade to 10.3 or 10.2 soon.
Data as of 25 Oct 2026, 19:02 UTC
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 9% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 10.3, 10.2
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HExploitation evidence
Disclosed: evidence found.
CVE published 16 Apr 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-25.
What to do
Upgrade redhat/kernel to 10.3 or 10.2.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Red Hatredhat/kernelpkg:rpm/redhat/kernelOther threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
Red Hat has released an official kernel update that fixes this vulnerability. Users should apply the update for Red Hat Enterprise Linux 10 as described in the advisory RHSA-2025:10854 and reboot the system to activate the fix. No additional mitigation steps are indicated by the vendor.
Description
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 <<bh on stack>> 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 <<keep going>> ... ... ... ... <<bh is not valid out of mpage_read_folio>> . . another_function <<variable A on stack>> 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.
References
- access.redhat.com/errata/RHSA-2025:10854 (opens in a new tab)
- access.redhat.com/security/updates/classification/ (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2360231 (opens in a new tab)
- security.access.redhat.com/data/csaf/v2/advisories/2025/rhsa-2025_10854.json (opens in a new tab)
- ubuntu.com/security/CVE-2025-22036 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2025-22036 (opens in a new tab)
- git.kernel.org/linus/1bb7ff4204b6d4927e982cd256286c09ed4fd8ca (opens in a new tab)
- git.kernel.org/stable/c/1bb7ff4204b6d4927e982cd256286c09ed4fd8ca (opens in a new tab)
- git.kernel.org/stable/c/49b0a6ab8e528a0c1c50e37cef9b9c7c121365f2 (opens in a new tab)
- git.kernel.org/stable/c/f7447286363dc1e410bf30b87d75168f3519f9cc (opens in a new tab)
- git.kernel.org/stable/c/f807a6bf2005740fa26b4f59c4a003dc966b9afd (opens in a new tab)
- ubuntu.com/security/notices/USN-7594-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-7594-2 (opens in a new tab)
- ubuntu.com/security/notices/USN-7594-3 (opens in a new tab)
- ubuntu.com/security/notices/USN-7835-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-7835-2 (opens in a new tab)
- ubuntu.com/security/notices/USN-7835-3 (opens in a new tab)
- ubuntu.com/security/notices/USN-7835-4 (opens in a new tab)
- ubuntu.com/security/notices/USN-7835-5 (opens in a new tab)
- ubuntu.com/security/notices/USN-7835-6 (opens in a new tab)
- ubuntu.com/security/notices/USN-7887-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-7887-2 (opens in a new tab)
- ubuntu.com/security/notices/USN-7940-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-7940-2 (opens in a new tab)