Red Hat Security Advisory: kernel security update

Fixed packages 91

Vulnerabilities 7

• Critical 9.8
  CVE-2025-38211

  RDMA/iwcm: Fix use-after-free of work objects after cm_id destruction

  In the Linux kernel, the following vulnerability has been resolved: RDMA/iwcm: Fix use-after-free of work objects after cm_id destruction The commit 59c68ac31e15 ("iw_cm: free cm_id resources on the last deref") simplified cm_id resource management by freeing…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  Jul 4, 2025
• Critical 9.8
  CVE-2025-38472

  netfilter: nf_conntrack: fix crash due to removal of uninitialised entry

  In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_conntrack: fix crash due to removal of uninitialised entry A crash in conntrack was reported while trying to unlink the conntrack entry from the hash bucket list: [exception RIP…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  Jul 28, 2025
• High 7.8
  CVE-2025-37823

  net_sched: hfsc: Fix a potential UAF in hfsc_dequeue() too

  In the Linux kernel, the following vulnerability has been resolved: net_sched: hfsc: Fix a potential UAF in hfsc_dequeue() too Similarly to the previous patch, we need to safe guard hfsc_dequeue() too. But for this one, we don't have a reliable reproducer.

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu
  May 8, 2025
• High 7.8
  CVE-2025-38464

  tipc: Fix use-after-free in tipc_conn_close().

  In the Linux kernel, the following vulnerability has been resolved: tipc: Fix use-after-free in tipc_conn_close(). syzbot reported a null-ptr-deref in tipc_conn_close() during netns dismantle. [0] tipc_topsrv_stop() iterates tipc_net(net)->topsrv->conn_idr an…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  Jul 25, 2025
• High 7.0
  CVE-2025-38461

  vsock: Fix transport_* TOCTOU

  In the Linux kernel, the following vulnerability has been resolved: vsock: Fix transport_* TOCTOU Transport assignment may race with module unload. Protect new_transport from becoming a stale pointer. This also takes care of an insecure call in vsock_use_loca…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  Jul 25, 2025
• Unscored —
  CVE-2025-22058

  udp: Fix memory accounting leak.

  In the Linux kernel, the following vulnerability has been resolved: udp: Fix memory accounting leak. Matt Dowling reported a weird UDP memory usage issue. Under normal operation, the UDP memory usage reported in /proc/net/sockstat remains close to zero. Howev…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  Apr 16, 2025
• Unscored —
  CVE-2025-38220

  ext4: only dirty folios when data journaling regular files

  In the Linux kernel, the following vulnerability has been resolved: ext4: only dirty folios when data journaling regular files fstest generic/388 occasionally reproduces a crash that looks as follows: BUG: kernel NULL pointer dereference, address: 00000000000…

  Linux Linux linux-raspi2 linux-hwe Linux Debian Ubuntu Azure Linux
  Jul 4, 2025

References

• article
  https://access.redhat.com/security/updates/classification/#moderate
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2360276
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2365024
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2376363
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2376406
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2383509
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2383513
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2383916
• advisory
  https://security.access.redhat.com/data/csaf/v2/advisories/2025/rhsa-2025_15005.json
• report
  https://access.redhat.com/security/cve/CVE-2025-22058
• advisory
  https://www.cve.org/CVERecord?id=CVE-2025-22058
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2025-22058
• article
  https://lore.kernel.org/linux-cve-announce/2025041606-CVE-2025-22058-045a@gregkh/T
• report
  https://access.redhat.com/security/cve/CVE-2025-37823
• advisory
  https://www.cve.org/CVERecord?id=CVE-2025-37823
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2025-37823
• article
  https://lore.kernel.org/linux-cve-announce/2025050821-CVE-2025-37823-d739@gregkh/T
• report
  https://access.redhat.com/security/cve/CVE-2025-38211
• advisory
  https://www.cve.org/CVERecord?id=CVE-2025-38211
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2025-38211
• article
  https://lore.kernel.org/linux-cve-announce/2025070422-CVE-2025-38211-215a@gregkh/T
• report
  https://access.redhat.com/security/cve/CVE-2025-38220
• advisory
  https://www.cve.org/CVERecord?id=CVE-2025-38220
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2025-38220
• article
  https://lore.kernel.org/linux-cve-announce/2025070425-CVE-2025-38220-a235@gregkh/T
• report
  https://access.redhat.com/security/cve/CVE-2025-38461
• advisory
  https://www.cve.org/CVERecord?id=CVE-2025-38461
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2025-38461
• article
  https://lore.kernel.org/linux-cve-announce/2025072507-CVE-2025-38461-33b1@gregkh/T
• report
  https://access.redhat.com/security/cve/CVE-2025-38464
• advisory
  https://www.cve.org/CVERecord?id=CVE-2025-38464
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2025-38464
• article
  https://lore.kernel.org/linux-cve-announce/2025072508-CVE-2025-38464-44a1@gregkh/T
• report
  https://access.redhat.com/security/cve/CVE-2025-38472
• advisory
  https://www.cve.org/CVERecord?id=CVE-2025-38472
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2025-38472
• article
  https://lore.kernel.org/linux-cve-announce/2025072812-CVE-2025-38472-fa6d@gregkh/T