CVSS: 5.5EPSS: 0%CPEs: 8EXPL: 0CVE-2025-21647 – sched: sch_cake: add bounds checks to host bulk flow fairness counts
https://notcve.org/view.php?id=CVE-2025-21647
19 Jan 2025 — In the Linux kernel, the following vulnerability has been resolved: sched: sch_cake: add bounds checks to host bulk flow fairness counts Even though we fixed a logic error in the commit cited below, syzbot still managed to trigger an underflow of the per-host bulk flow counters, leading to an out of bounds memory access. To avoid any such logic errors causing out of bounds memory accesses, this commit factors out all accesses to the per-host bulk flow counters to a series of helpers that perform bounds-chec... • https://git.kernel.org/stable/c/549e407569e08459d16122341d332cb508024094 •
CVSS: 7.8EPSS: 0%CPEs: 4EXPL: 0CVE-2025-21646 – afs: Fix the maximum cell name length
https://notcve.org/view.php?id=CVE-2025-21646
19 Jan 2025 — In the Linux kernel, the following vulnerability has been resolved: afs: Fix the maximum cell name length The kafs filesystem limits the maximum length of a cell to 256 bytes, but a problem occurs if someone actually does that: kafs tries to create a directory under /proc/net/afs/ with the name of the cell, but that fails with a warning: WARNING: CPU: 0 PID: 9 at fs/proc/generic.c:405 because procfs limits the maximum filename length to 255. However, the DNS limits the maximum lookup length and, by extensio... • https://git.kernel.org/stable/c/c3e9f888263bb4df11cbd623ceced02081cb2f9f •
CVSS: 6.3EPSS: 0%CPEs: 5EXPL: 0CVE-2025-21645 – platform/x86/amd/pmc: Only disable IRQ1 wakeup where i8042 actually enabled it
https://notcve.org/view.php?id=CVE-2025-21645
19 Jan 2025 — In the Linux kernel, the following vulnerability has been resolved: platform/x86/amd/pmc: Only disable IRQ1 wakeup where i8042 actually enabled it Wakeup for IRQ1 should be disabled only in cases where i8042 had actually enabled it, otherwise "wake_depth" for this IRQ will try to drop below zero and there will be an unpleasant WARN() logged: kernel: atkbd serio0: Disabling IRQ1 wakeup source to avoid platform firmware bug kernel: ------------[ cut here ]------------ kernel: Unbalanced IRQ 1 wake disable ker... • https://git.kernel.org/stable/c/8e60615e8932167057b363c11a7835da7f007106 •
CVSS: 5.5EPSS: 0%CPEs: 4EXPL: 0CVE-2025-21640 – sctp: sysctl: cookie_hmac_alg: avoid using current->nsproxy
https://notcve.org/view.php?id=CVE-2025-21640
19 Jan 2025 — In the Linux kernel, the following vulnerability has been resolved: sctp: sysctl: cookie_hmac_alg: avoid using current->nsproxy As mentioned in a previous commit of this series, using the 'net' structure via 'current' is not recommended for different reasons: - Inconsistency: getting info from the reader's/writer's netns vs only from the opener's netns. - current->nsproxy can be NULL in some cases, resulting in an 'Oops' (null-ptr-deref), e.g. when the current task is exiting, as spotted by syzbot [1] using... • https://git.kernel.org/stable/c/3c68198e75111a905ac2412be12bf7b29099729b •
CVSS: 6.4EPSS: 0%CPEs: 4EXPL: 0CVE-2025-21639 – sctp: sysctl: rto_min/max: avoid using current->nsproxy
https://notcve.org/view.php?id=CVE-2025-21639
19 Jan 2025 — In the Linux kernel, the following vulnerability has been resolved: sctp: sysctl: rto_min/max: avoid using current->nsproxy As mentioned in a previous commit of this series, using the 'net' structure via 'current' is not recommended for different reasons: - Inconsistency: getting info from the reader's/writer's netns vs only from the opener's netns. - current->nsproxy can be NULL in some cases, resulting in an 'Oops' (null-ptr-deref), e.g. when the current task is exiting, as spotted by syzbot [1] using acc... • https://git.kernel.org/stable/c/4f3fdf3bc59cafd14c3bc2c2369efad34c7aa8b5 •
CVSS: 5.5EPSS: 0%CPEs: 7EXPL: 0CVE-2025-21638 – sctp: sysctl: auth_enable: avoid using current->nsproxy
https://notcve.org/view.php?id=CVE-2025-21638
19 Jan 2025 — In the Linux kernel, the following vulnerability has been resolved: sctp: sysctl: auth_enable: avoid using current->nsproxy As mentioned in a previous commit of this series, using the 'net' structure via 'current' is not recommended for different reasons: - Inconsistency: getting info from the reader's/writer's netns vs only from the opener's netns. - current->nsproxy can be NULL in some cases, resulting in an 'Oops' (null-ptr-deref), e.g. when the current task is exiting, as spotted by syzbot [1] using acc... • https://git.kernel.org/stable/c/b14878ccb7fac0242db82720b784ab62c467c0dc •
CVSS: 5.5EPSS: 0%CPEs: 4EXPL: 0CVE-2025-21637 – sctp: sysctl: udp_port: avoid using current->nsproxy
https://notcve.org/view.php?id=CVE-2025-21637
19 Jan 2025 — In the Linux kernel, the following vulnerability has been resolved: sctp: sysctl: udp_port: avoid using current->nsproxy As mentioned in a previous commit of this series, using the 'net' structure via 'current' is not recommended for different reasons: - Inconsistency: getting info from the reader's/writer's netns vs only from the opener's netns. - current->nsproxy can be NULL in some cases, resulting in an 'Oops' (null-ptr-deref), e.g. when the current task is exiting, as spotted by syzbot [1] using acct(2... • https://git.kernel.org/stable/c/046c052b475e7119b6a30e3483e2888fc606a2f8 •
CVSS: 5.5EPSS: 0%CPEs: 4EXPL: 0CVE-2025-21636 – sctp: sysctl: plpmtud_probe_interval: avoid using current->nsproxy
https://notcve.org/view.php?id=CVE-2025-21636
19 Jan 2025 — In the Linux kernel, the following vulnerability has been resolved: sctp: sysctl: plpmtud_probe_interval: avoid using current->nsproxy As mentioned in a previous commit of this series, using the 'net' structure via 'current' is not recommended for different reasons: - Inconsistency: getting info from the reader's/writer's netns vs only from the opener's netns. - current->nsproxy can be NULL in some cases, resulting in an 'Oops' (null-ptr-deref), e.g. when the current task is exiting, as spotted by syzbot [1... • https://git.kernel.org/stable/c/d1e462a7a5f359cbb9a0e8fbfafcfb6657034105 •
CVSS: 5.5EPSS: 0%CPEs: 2EXPL: 0CVE-2025-21635 – rds: sysctl: rds_tcp_{rcv,snd}buf: avoid using current->nsproxy
https://notcve.org/view.php?id=CVE-2025-21635
19 Jan 2025 — In the Linux kernel, the following vulnerability has been resolved: rds: sysctl: rds_tcp_{rcv,snd}buf: avoid using current->nsproxy As mentioned in a previous commit of this series, using the 'net' structure via 'current' is not recommended for different reasons: - Inconsistency: getting info from the reader's/writer's netns vs only from the opener's netns. - current->nsproxy can be NULL in some cases, resulting in an 'Oops' (null-ptr-deref), e.g. when the current task is exiting, as spotted by syzbot [1] u... • https://git.kernel.org/stable/c/c6a58ffed53612be86b758df1cdb0b0f4305e9cb •
CVSS: 8.5EPSS: 0%CPEs: 2EXPL: 0CVE-2025-21634 – cgroup/cpuset: remove kernfs active break
https://notcve.org/view.php?id=CVE-2025-21634
19 Jan 2025 — In the Linux kernel, the following vulnerability has been resolved: cgroup/cpuset: remove kernfs active break A warning was found: WARNING: CPU: 10 PID: 3486953 at fs/kernfs/file.c:828 CPU: 10 PID: 3486953 Comm: rmdir Kdump: loaded Tainted: G RIP: 0010:kernfs_should_drain_open_files+0x1a1/0x1b0 RSP: 0018:ffff8881107ef9e0 EFLAGS: 00010202 RAX: 0000000080000002 RBX: ffff888154738c00 RCX: dffffc0000000000 RDX: 0000000000000007 RSI: 0000000000000004 RDI: ffff888154738c04 RBP: ffff888154738c04 R08: ffffffffaf27f... • https://git.kernel.org/stable/c/76bb5ab8f6e3e7bebdcefec4146ff305e7d0b465 •