VulnerabilityPublished 25 Sep 2026Updated 21 Oct 2026

CVE-2026-97605: Linux kernel · erofs: preserve LZMA decoders on resize failure

Affects Linux kernelSource CVE Database V5

Not known to be exploited · fixed in db0c3465b54a16debc089b2b3bda251d26c953d0 : update Linux kernel when convenient.

Data as of 26 Oct 2026, 14:18 UTC

Severity

Unrated

Rated by Threat Radar · CVSS not yet scored by NVD

EPSS: 0.2% 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 db0c3465b54a16debc089b2b3bda251d26c953d0, 617d0d8d199ba1790c94310fd75a22d01c97a8d6, 604ce546e1b9f35b1f45588004f53fac6b2869c1 +2

Exploitation evidence

Disclosed: evidence found.
CVE published 25 Sep 2026
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 26 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ 622ceaddb7649ca328832f50ba1400af778d75fa, < db0c3465b54a16debc089b2b3bda251d26c953d0	Fixed in db0c3465b54a16debc089b2b3bda251d26c953d0
LinuxLinux	Affected ≥ 622ceaddb7649ca328832f50ba1400af778d75fa, < 617d0d8d199ba1790c94310fd75a22d01c97a8d6	Fixed in 617d0d8d199ba1790c94310fd75a22d01c97a8d6
LinuxLinux	Affected ≥ 622ceaddb7649ca328832f50ba1400af778d75fa, < 604ce546e1b9f35b1f45588004f53fac6b2869c1	Fixed in 604ce546e1b9f35b1f45588004f53fac6b2869c1
LinuxLinux	Affected ≥ 622ceaddb7649ca328832f50ba1400af778d75fa, < 38e9e07ac02a9453a117410776f1502a9980997e	Fixed in 38e9e07ac02a9453a117410776f1502a9980997e
LinuxLinux	Affected ≥ 622ceaddb7649ca328832f50ba1400af778d75fa, < 0b3c8c39e50249470f00a5f73c288b95a55ab576	Fixed in 0b3c8c39e50249470f00a5f73c288b95a55ab576
LinuxLinux	Affected =5.16	Fixed in–

Description

In the Linux kernel, the following vulnerability has been resolved: erofs: preserve LZMA decoders on resize failure The pool-resize path frees each stream's old decoder before allocating its replacement. If an allocation fails after some streams have already been replaced, the failed stream is put back on the list with state == NULL. z_erofs_lzma_max_dictsize is still advanced as if the whole pool had been resized. An existing LZMA mount can select the broken stream and pass NULL to xz_dec_microlzma_reset(). A retry at the same size also skip another resize attempt. Since the global maximum was advanced, thus, the invalid state is left unrepaired. Allocate each replacement before freeing the old decoder, temporarily retaining one old decoder during allocation. Stop at the first failure and advance z_erofs_lzma_max_dictsize only after all streams satisfy the request. Record each stream's dictionary capacity so retries can skip streams already enlarged before a partial failure.

References

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