CVE-2026-90274

Not scored yetLast modified Oct 19, 2026

Description

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.

Metrics

No CVSS score has been published yet.

Affected software

Source: the vendor's advisory (CNA). NVD analysis pending.

VendorProductVersions
LinuxLinux>= 2e1cdfe184b5202d51e0611d7a051e2bea303946, < 8d669db59f7283b838e029af29da12e505265fae; >= 2e1cdfe184b5202d51e0611d7a051e2bea303946, < 4091f2d5b26d117c992ffcce1a5df425a0daedcd; >= 2e1cdfe184b5202d51e0611d7a051e2bea303946, < be7b2de5b9a96ae68ffa3528e0a40d63e0fd8148; >= 2e1cdfe184b5202d51e0611d7a051e2bea303946, < 4f9a0f548413bf864f609c9f4bc56e3f1b3577d4; >= 2e1cdfe184b5202d51e0611d7a051e2bea303946, < 1ade9a335c69fc735cb7b3f222ed35ab135540fb; >= 2e1cdfe184b5202d51e0611d7a051e2bea303946, < 5ac900f73ce1d4d8308f40752b51bc8a02b244d2; >= 2e1cdfe184b5202d51e0611d7a051e2bea303946, < 1674d9bff8073bdee5dbc200f56fc3caa28d0566
LinuxLinux4.2

References

Timeline

Published
Sep 17, 2026
Last modified
Oct 19, 2026
NVD status
Received

Related CVEs from 2026

CVE-2026-90275In the Linux kernel, the following vulnerability has been resolved: md/raid1: don't set array_frozen in raid1_takeover() raid1_takeover() CVE-2026-90276In the Linux kernel, the following vulnerability has been resolved: md/md-llbitmap: stop daemon timer rearm on destroy llbitmap_destroy() CVE-2026-90277In the Linux kernel, the following vulnerability has been resolved: md/md-llbitmap: prevent create failure bitmap UAF llbitmap_create() puCVE-2026-90278In the Linux kernel, the following vulnerability has been resolved: md: wait for behind writes before destroying bitmap __md_stop() destroCVE-2026-90279In the Linux kernel, the following vulnerability has been resolved: md/raid5: round bitmap stripes with sector division raid5_bitmap_sectoCVE-2026-90285.3The CorvusPay WooCommerce Payment Gateway plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 2CVE-2026-90280In the Linux kernel, the following vulnerability has been resolved: phy: qcom: qmp-usb: Fix possible NULL-deref on early runtime suspend TCVE-2026-90281In the Linux kernel, the following vulnerability has been resolved: phy: qcom: snps-femto-v2: Fix possible NULL-deref on early runtime suspCVE-2026-90282In the Linux kernel, the following vulnerability has been resolved: phy: qcom: qmp-usb-legacy: Fix possible NULL-deref on early runtime susCVE-2026-90283In the Linux kernel, the following vulnerability has been resolved: hugetlbfs: release subpool on fill_super failure hugetlbfs_fill_super(CVE-2026-90284In the Linux kernel, the following vulnerability has been resolved: firmware_loader: do not queue completed sysfs fallback requests fw_loaCVE-2026-90285In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Remove redundant VPD flash read in sysfs read path qla2
CVE-2026-90274: Unscored | Vulnix