CVE-2026-90274
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)
coresight: etm4x: fix underflow for usage of (nrseqstate - 1)
In the Linux kernel, the following vulnerability has been resolved: coresight: etm4x: fix underflow for usage of (nrseqstate - 1) According to IHI006H Embedded Trace Macrocell Architecture Specification[0], TRCSEQEVR<n> is implemented only when TRCIDR5.NUMSEQSTATE is 0b100, in which case n ranges from 0 to 2; otherwise, TRCIDR5.NUMSEQSTATE is 0b000. IOW, the number of usage in the initialisation or setting TRCSEQEVR<n> with drvdata->nrseqstate - 1 in the loop could make underflow issue when TRCIDR5.NUMSEQSTATE is 0b000. Therefore, introduce nr_seq_ctrls field and untie it from nrseqstate. As part of this introduce ETM_MAX_SEQ_TRANSITIONS macro and apply nr_seq_ctrls and above macro to TRCSEQEVR<n> relevant fields setup.
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) |
|---|---|---|---|---|---|
| 2e1cdfe184b5202d51e0611d7a051e2bea303946 | affected | git | 8d669db59f7283b838e029af29da12e505265fae | Unavailable | None listed |
| 2e1cdfe184b5202d51e0611d7a051e2bea303946 | affected | git | 4091f2d5b26d117c992ffcce1a5df425a0daedcd | Unavailable | None listed |
| 2e1cdfe184b5202d51e0611d7a051e2bea303946 | affected | git | be7b2de5b9a96ae68ffa3528e0a40d63e0fd8148 | Unavailable | None listed |
| 2e1cdfe184b5202d51e0611d7a051e2bea303946 | affected | git | 4f9a0f548413bf864f609c9f4bc56e3f1b3577d4 | Unavailable | None listed |
| 2e1cdfe184b5202d51e0611d7a051e2bea303946 | affected | git | 1ade9a335c69fc735cb7b3f222ed35ab135540fb | Unavailable | None listed |
| 2e1cdfe184b5202d51e0611d7a051e2bea303946 | affected | git | 5ac900f73ce1d4d8308f40752b51bc8a02b244d2 | Unavailable | None listed |
| 2e1cdfe184b5202d51e0611d7a051e2bea303946 | affected | git | 1674d9bff8073bdee5dbc200f56fc3caa28d0566 | 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) |
|---|---|---|---|---|---|
| 4.2 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 4.2 | Unavailable | 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 |