CVE-2026-89552
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)
params: fix charp corruption on allocation failure
In the Linux kernel, the following vulnerability has been resolved: params: fix charp corruption on allocation failure param_set_charp() stores charp parameters in allocated memory after slab is available, and releases the previous value when the parameter is updated. The previous value is released before the replacement allocation succeeds. If kmalloc_parameter() fails, the setter returns -ENOMEM with the parameter left as NULL. Failing zswap's compressor update before zswap is initialized can later trigger: BUG: kernel NULL pointer dereference, address: 0000000000000000 RIP: 0010:strcmp+0x10/0x30 Call Trace: zswap_setup+0x3b1/0x490 zswap_enabled_param_set+0x5b/0xa0 param_attr_store+0x93/0xe0 module_attr_store+0x1c/0x30 kernfs_fop_write_iter+0x116/0x1f0 Allocate and copy the replacement first, then replace the parameter value only after allocation succeeds.
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) |
|---|---|---|---|---|---|
| e180a6b7759a99a28cbcce3547c4c80822cb6c2a | affected | git | 31b41ea8383d51992d6b0dfe3a99da1dec8ce1c1 | Unavailable | None listed |
| e180a6b7759a99a28cbcce3547c4c80822cb6c2a | affected | git | 614f873268c5b172804c9af6639bd17b7e1e2359 | Unavailable | None listed |
| e180a6b7759a99a28cbcce3547c4c80822cb6c2a | affected | git | 704ecd010d4a9b33160e40b74eb402f6b86a18e0 | Unavailable | None listed |
| e180a6b7759a99a28cbcce3547c4c80822cb6c2a | affected | git | 0d8e2404925a0607ffec79a53170715a46936896 | Unavailable | None listed |
| e180a6b7759a99a28cbcce3547c4c80822cb6c2a | affected | git | 3dfaae04243cde460d82dfc2a7dd0bb6664d20ae | 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) |
|---|---|---|---|---|---|
| 2.6.30 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 2.6.30 | Unavailable | None listed |
| 6.6.160 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.109 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.50 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 7.2.4 | unaffected | semver | Unavailable | 7.2.* | None listed |
| 7.3 | unaffected | original_commit_for_fix | Unavailable | * | None listed |