CVE-2026-22991High· 7.5▾ TwilightIn the Linux kernel, the following vulnerability has been resolved: libceph: make free_choose_arg_map() resilient to partial allocation free_choose_arg_map() may dereference a NULL pointer if its caller fails after a partial allocation…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 41.3 · likelihood 0.1 · exploitation 0
Need a working PoC? Pro members can cast a request and our team develops one — it lands right here.
Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake. The CVSS score shown above comes from the assigning CNA record, not NVD.
Exploit-prediction probability, daily snapshots since Oct 19.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
Last analysed / modified upstream
0.4%
0.4% → 0.5%
In the Linux kernel, the following vulnerability has been resolved:
libceph: make free_choose_arg_map() resilient to partial allocation
free_choose_arg_map() may dereference a NULL pointer if its caller fails after a partial allocation.
For example, in decode_choose_args(), if allocation of arg_map->args fails, execution jumps to the fail label and free_choose_arg_map() is called. Since arg_map->size is updated to a non-zero value before memory allocation, free_choose_arg_map() will iterate over arg_map->args and dereference a NULL pointer.
To prevent this potential NULL pointer dereference and make free_choose_arg_map() more resilient, add checks for pointers before iterating.
Linux >= 5cf9c4a9959b6273675310d14a834ef14fbca37c < 9b3730dabcf3764bfe3ff07caf55e641a0b45234Linux >= 5cf9c4a9959b6273675310d14a834ef14fbca37c < 851241d3f78a5505224dc21c03d8692f530256b4Linux >= 5cf9c4a9959b6273675310d14a834ef14fbca37c < ec1850f663da64842614c86b20fe734be070c2baLinux >= 5cf9c4a9959b6273675310d14a834ef14fbca37c < 8081faaf089db5280c3be820948469f7c58ef8ddLinux >= 5cf9c4a9959b6273675310d14a834ef14fbca37c < c4c2152a858c0ce4d2bff6ca8c1d5b0ef9f2cbdfLinux >= 5cf9c4a9959b6273675310d14a834ef14fbca37c < f21c3fdb96833aac2f533506899fe38c19cf49d5Linux >= 5cf9c4a9959b6273675310d14a834ef14fbca37c < e3fe30e57649c551757a02e1cad073c47e1e075eLinux 4.13Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
CVE-2026-99118Nonedrm/i915/dmc: Harden DMC firmware payload parsing
CVE-2026-99117Nonenet: bridge: mcast: don't truncate the port group walk on teardown
CVE-2026-99121Noneipv4: avoid divide by zero in fib_rebalance
CVE-2026-99120NoneKVM: x86/mmu: Cope with the SS bit being set in #NPF exit codes
CVE-2026-99119Nonedrm/amdgpu/userq: actually validate userq BOs
CVE-2026-99123Nonevsock/virtio: validate packet source for connected sockets