erofs: preserve LZMA decoders on resize failure
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.
CVE-2026-97605
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-97605
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "622ceaddb7649ca328832f50ba1400af778d75fa",
"lessThan": "db0c3465b54a16debc089b2b3bda251d26c953d0",
"versionType": "git"
},
{
"status": "affected",
"version": "622ceaddb7649ca328832f50ba1400af778d75fa",
"lessThan": "604ce546e1b9f35b1f45588004f53fac6b2869c1",
"versionType": "git"
},
{
"status": "affected",
"version": "622ceaddb7649ca328832f50ba1400af778d75fa",
"lessThan": "0b3c8c39e50249470f00a5f73c288b95a55ab576",
"versionType": "git"
},
{
"status": "affected",
"version": "622ceaddb7649ca328832f50ba1400af778d75fa",
"lessThan": "38e9e07ac02a9453a117410776f1502a9980997e",
"versionType": "git"
},
{
"status": "affected",
"version": "622ceaddb7649ca328832f50ba1400af778d75fa",
"lessThan": "617d0d8d199ba1790c94310fd75a22d01c97a8d6",
"versionType": "git"
}
],
"programFiles": [
"fs/erofs/decompressor_lzma.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "5.16"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "5.16",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.6.160",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.111",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.53",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.7",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"fs/erofs/decompressor_lzma.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-97605
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #48792 · Revision 1
- Added to Heist Feed
- Publisher date