CVE-2026-93049
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2026
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
mtd: mtdswap: Avoid freeing registered blktrans device twice
In the Linux kernel, the following vulnerability has been resolved: mtd: mtdswap: Avoid freeing registered blktrans device twice In mtdswap_add_mtd(), debugfs setup failure after successful blktrans registration can free mbd_dev twice. add_mtd_blktrans_dev() initializes the blktrans device reference and publishes the disk. Once that succeeds, del_mtd_blktrans_dev() tears the disk down and drops the blktrans reference; when that reference reaches zero, blktrans_dev_release() frees the mtd_blktrans_dev. The debugfs failure path called del_mtd_blktrans_dev(mbd_dev), then fell through the common cleanup label and called kfree(mbd_dev) again. Clear the local pointer after deregistration so the common cleanup can still release the mtdswap state without freeing the blktrans object twice. This issue was found by a static analysis checker and confirmed by manual source review.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| e8e3edb95ce6a146bc774b6cfad3553f4383edc8 | affected | git | ecadb9137aeaa0615183f8d23eabea2b45c862f1 | Unavailable | None listed |
| e8e3edb95ce6a146bc774b6cfad3553f4383edc8 | affected | git | eec130fc9ffbbd08a5d5432683122b79aca2a726 | Unavailable | None listed |
| e8e3edb95ce6a146bc774b6cfad3553f4383edc8 | affected | git | d5086911d532b82ca070d944aa08ddde00baefe4 | Unavailable | None listed |
| e8e3edb95ce6a146bc774b6cfad3553f4383edc8 | affected | git | 0ce48c6ddea1a8e675a2eb0221b62a9950788f3c | Unavailable | None listed |
| e8e3edb95ce6a146bc774b6cfad3553f4383edc8 | affected | git | a82d93fcfdfd26af17049c34319dfdd079cd1901 | Unavailable | None listed |
| e8e3edb95ce6a146bc774b6cfad3553f4383edc8 | affected | git | 5c349c533e72af2313c3be0f80a24d7407fa4777 | Unavailable | None listed |
| e8e3edb95ce6a146bc774b6cfad3553f4383edc8 | affected | git | 37be7bc2c2d09c18e939da20224405864a0090b9 | Unavailable | None listed |
| e8e3edb95ce6a146bc774b6cfad3553f4383edc8 | affected | git | 779aa4c66a96bf43d2d62982ea1a9096a9128d87 | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 4.14 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 4.14 | Unavailable | None listed |
| 5.10.270 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.221 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.188 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.157 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.110 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.52 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 7.2.6 | unaffected | semver | Unavailable | 7.2.* | None listed |
| 7.3 | unaffected | original_commit_for_fix | Unavailable | * | None listed |