CVE-2026-74749

A flaw was found in the Linux kernel's restartable sequences rseq mechanism. An inconsistency in the handling of lock states during time slice extensions can occur when interrupts are enabled. This can lead to a system livelock or hard lockup, effectively causing a Denial of Service DoS for the...

CVE-2026-74749

In the Linux kernel, the following vulnerability has been resolved: rseq: Prevent hard lockup on granted time slice extension exittousermodeloop invokes rseqgranttimesliceextension with interrupts enabled. If the extension is granted it invokes hrtimerrearmdeferredtif to ensure that a pending...

UBUNTU-CVE-2026-74749

In the Linux kernel, the following vulnerability has been resolved: rseq: Prevent hard lockup on granted time slice extension exittousermodeloop invokes rseqgranttimesliceextension with interrupts enabled. If the extension is granted it invokes hrtimerrearmdeferredtif to ensure that a pending...

CVE-2026-74749

CVE-2026-74749 affects the Linux kernel 's rseq (restricted sequence) subsystem. When __exit_to_user_mode_loop() invokes rseq_grant_timeslice_extension() with interrupts enabled, a granted time slice extension calls hrtimer_rearm_deferred_tif(), which in turn calls __hrtimer_rearm_deferred() — a ...

CVE-2026-74749 rseq: Prevent hard lockup on granted time slice extension

In the Linux kernel, the following vulnerability has been resolved: rseq: Prevent hard lockup on granted time slice extension exittousermodeloop invokes rseqgranttimesliceextension with interrupts enabled. If the extension is granted it invokes hrtimerrearmdeferredtif to ensure that a pending...

Unity Linux 20.1050a Security Update: kernel (UTSA-2026-098967)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-098967 advisory. In the Linux kernel, the following vulnerability has been resolved: ipv6: Fix soft lockups in fib6selectpath under high next hop churn Soft lockups have been observe...

CVE-2026-74749: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: rseq: Prevent hard lockup on granted time slice extension exittousermodeloop invokes rseqgranttimesliceextension with interrupts enabled. If the extension is granted it invokes hrtimerrearmdeferredtif to ensure that a pending...

Unity Linux 20.1050a Security Update: kernel (UTSA-2026-098759)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-098759 advisory. In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Fix VM hard lockup after prolonged inactivity with periodic HV timer When advancing the...

Unity Linux 20.1050a Security Update: kernel (UTSA-2026-098984)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-098984 advisory. In the Linux kernel, the following vulnerability has been resolved: iommu/amd: move waitonsem out of spinlock With iommu.strict=1, the existing completion wait path...

Unity Linux 20.1050a Security Update: kernel (UTSA-2026-098808)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-098808 advisory. In the Linux kernel, the following vulnerability has been resolved: net: ethernet: cortina: Use TOE/TSO on all TCP It is desireable to push the hardware accelerator ...

PT-2026-82129

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A hard lockup can occur during a granted time slice extension. The function exit to user mode loop calls rseq grant timeslice extension while interrupts are enabled. If the extension is...

Linux Distros Unpatched Vulnerability : CVE-2026-74749

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - In the Linux kernel, the following vulnerability has been resolved: rseq: Prevent hard lockup on granted time slice extension exittousermodeloop invokes...

Astra Linux – Vulnerability in Linux, Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: powerpc/mm: Fix lockup on kernel exec fault The powerpc kernel is not prepared to handle exec faults from the kernel. In particular, the function isexecfault will return ‘false’ when an exec fault is encountered by the kernel,...

Astra Linux – Vulnerability in Linux

A vulnerability was discovered in the Linux kernel before version 5.9. Arch/x86/kvm/svm/sev.c allows attackers to cause a denial of service soft lockup by triggering the destruction of a large SEV VM, which requires unregistering many encrypted regions. This vulnerability is also known as...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1, and Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: RDMA/hns: Fixed a soft lockup that occurred during the loop that allocates BT pages. The driver executes a for-loop when allocating BT pages and mapping them with buffer pages. When allocating a large buffer e.g., an MR of ove...

Astra Linux – Vulnerability in Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: scsi: lpfc: Fixed a hard lockup issue when reading the rxmonitor from debugfs. During I/O operations and simultaneous reads of /sys/kernel/debug/lpfc/fnX/rxmonitor, a hard lockup similar to the call trace below may occur. The...

Astra Linux – Vulnerabilities in Linux-6.1, Linux-5.15, Linux-5.10

In the Linux kernel, the following vulnerability has been resolved: iio: imu: stlsm6dsx: fixed a possible lock-up in stlsm6dsxreadtaggedfifo This issue was addressed by preventing stlsm6dsxreadtaggedfifo from falling into an infinite loop when case patternlen is equal to zero and the device’s FIF...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: media: rkisp1: Fixed the race condition related to interrupt disable. In rkisp1ispstop and rkisp1csidisable, the driver masks the interrupts and then assumes that the interrupt handler will not be running. However, this is not...

Astra Linux – Vulnerability in Linux 5.10, Linux, Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: dmcrypt: added condresched to dmcryptwrite. The loop in dmcryptwrite may run for an unlimited amount of time; therefore, condresched is needed in it. This commit fixes the following warnings: 3391.153255 C12 watchdog: BUG: sof...

Astra Linux – Vulnerabilities in Linux, Linux-5.10, Linux-5.15, Linux-6.1

In the Linux kernel, the following vulnerability has been resolved: batman-adv: Bypass of empty buckets in batadvpurgeorigref Many syzbot reports point to soft lockups in batadvpurgeorigref 1 The root cause is unknown, but we can avoid spending too much time on this issue and potentially obtain...