CVE catalog

CVE-2026-99092

linux: CVE-2026-99092

Severity: Low
Published: Oct 26, 2026, 3:16:48 PM UTC
Source: [NVD] · [CVE record]

In the Linux kernel, the following vulnerability has been resolved: riscv: patch: fix handling of bpf-jit execmem addresses Commit 8718e5a3090b ("riscv: patch: skip fixmap mapping when kernel text is already writable") gated the core_kernel_text() branch of patch_map() on CONFIG_STRICT_KERNEL_RWX, and explicitly left the vmalloc branch unchanged. That branch has a separate problem. That branch only creates a temporary writable fixmap alias when CONFIG_STRICT_MODULE_RWX is enabled, and otherwise assumes the target is directly writable and returns the address unchanged. That assumption no longer holds: bpf_prog_pack_alloc calls set_memory_rox() on every pack unconditionally in alloc_new_pack(), independently of any CONFIG_STRICT_*_RWX option, so BPF text in the vmalloc area is read-only regardless of what CONFIG_STRICT_MODULE_RWX says. With CONFIG_STRICT_MODULE_RWX=n, patch_map() returns the read-only address directly, the subsequent copy_to_kernel_nofault() takes a page fault and returns -EFAULT. bpf_arch_text_copy() turns that into -EINVAL, which propagates through bpf_jit_binary_pack_finalize() to the WARN_ON() in bpf_int_jit_compile() and leaves the program un-JITed. Note that BPF cannot be fixed the way kprobes was in commit bdc46e507b59 ("riscv: mm: make EXECMEM_KPROBES writable without CONFIG_STRICT_MODULE_RWX"). EXECMEM_BPF is already PAGE_KERNEL, i.e. writable at allocation time; the read-only mapping is established afterwards by generic code in alloc_new_pack(), which arch code cannot influence. The only place this can be handled is patch_map(). This is the same problem that was fixed on arm64 by commit b1480ed230ac ("arm64: patching: fix handling of execmem addresses"), and the fix is the same: CONFIG_EXECMEM is what actually tracks whether the vmalloc area can hold executable memory that needs a temporary alias to be written. CONFIG_BPF_JIT, CONFIG_KPROBES and CONFIG_MODULES all select it. Note that this is not limited to CONFIG_MODULES=n. Unlike arm64, riscv selects CONFIG_ARCH_OPTIONAL_KERNEL_RWX, so CONFIG_STRICT_MODULE_RWX can be disabled with CONFIG_MODULES=y as well, and the bug is reachable in that configuration too. The !CONFIG_MMU build is unaffected: it has its own __patch_insn_set() and __patch_insn_write() implementations and never calls patch_map().

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	linux	sid	`7.2.12-1`	fixed
Debian	linux	forky	`7.2.12-1`	fixed
Debian	linux	trixie	`6.12.107-1`	vulnerable
Debian	linux	trixie-security	`6.12.113-1`	vulnerable
Debian	linux	bookworm	`6.1.176-1`	not affected
Debian	linux	bookworm-security	`6.1.190-1`	not affected

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	linux	source	sid	`7.2.11-1`	not yet assigned	Not reported	Not reported
Debian	linux	source	forky	`7.2.11-1`	not yet assigned	Not reported	Not reported
Debian	linux	source	trixie	`(unfixed)`	not yet assigned	Not reported	Not reported
Debian	linux	source	bookworm	`Not affected`	unimportant	Not reported	Not reported

OpenFactory catalog packages

[Debian 13 (Trixie)]

[bpftool]Affected
Source package: [linux]
Details (10)
- 7.5.0+6.12.94-1 · amd64 · trixie
  Affected
  dsa · linux · debian · 13
- 7.5.0+6.12.94-1 · arm64 · trixie
  Affected
  dsa · linux · debian · 13
- 7.8.0+7.1.8-1~bpo13+1 · amd64 · trixie-backports
  Affected
  dsa · linux · debian · 13
- 7.8.0+7.1.8-1~bpo13+1 · arm64 · trixie-backports
  Affected
  dsa · linux · debian · 13
- 7.5.0+6.12.101-1 · amd64 · trixie-security · Historical version
  Affected
  dsa · linux · debian · 13
- 7.5.0+6.12.105-1 · amd64 · trixie-security · Historical version
  Affected
  dsa · linux · debian · 13
- 7.5.0+6.12.107-1 · amd64 · trixie-security · Historical version
  Affected
  dsa · linux · debian · 13
- 7.5.0+6.12.107-1 · arm64 · trixie-security
  Affected
  dsa · linux · debian · 13
- 7.5.0+6.12.111-1 · amd64 · trixie-security · Historical version
  Affected
  dsa · linux · debian · 13
- 7.5.0+6.12.113-1 · amd64 · trixie-security
  Affected
  dsa · linux · debian · 13
[hyperv-daemons]Affected
Source package: [linux]
Details (10)
- 6.12.94-1 · amd64 · trixie
  Affected
  dsa · linux · debian · 13
- 6.12.94-1 · arm64 · trixie
  Affected
  dsa · linux · debian · 13
- 7.1.8-1~bpo13+1 · amd64 · trixie-backports
  Affected
  dsa · linux · debian · 13
- 7.1.8-1~bpo13+1 · arm64 · trixie-backports
  Affected
  dsa · linux · debian · 13
- 6.12.101-1 · amd64 · trixie-security · Historical version
  Affected
  dsa · linux · debian · 13
- 6.12.105-1 · amd64 · trixie-security · Historical version
  Affected
  dsa · linux · debian · 13
- 6.12.107-1 · amd64 · trixie-security · Historical version
  Affected
  dsa · linux · debian · 13
- 6.12.107-1 · arm64 · trixie-security
  Affected
  dsa · linux · debian · 13
- 6.12.111-1 · amd64 · trixie-security · Historical version
  Affected
  dsa · linux · debian · 13
- 6.12.113-1 · amd64 · trixie-security
  Affected
  dsa · linux · debian · 13
[intel-sdsi]Affected
Source package: [linux]
Details (7)
- 6.12.94-1 · amd64 · trixie
  Affected
  dsa · linux · debian · 13
- 7.1.8-1~bpo13+1 · amd64 · trixie-backports
  Affected
  dsa · linux · debian · 13
- 6.12.101-1 · amd64 · trixie-security · Historical version
  Affected
  dsa · linux · debian · 13
- 6.12.105-1 · amd64 · trixie-security · Historical version
  Affected
  dsa · linux · debian · 13
- 6.12.107-1 · amd64 · trixie-security · Historical version
  Affected
  dsa · linux · debian · 13
- 6.12.111-1 · amd64 · trixie-security · Historical version
  Affected
  dsa · linux · debian · 13
- 6.12.113-1 · amd64 · trixie-security
  Affected
  dsa · linux · debian · 13
[libcpupower1]Affected
Source package: [linux]
Details (10)
- 6.12.94-1 · amd64 · trixie
  Affected
  dsa · linux · debian · 13
- 6.12.94-1 · arm64 · trixie
  Affected
  dsa · linux · debian · 13
- 7.1.8-1~bpo13+1 · amd64 · trixie-backports
  Affected
  dsa · linux · debian · 13
- 7.1.8-1~bpo13+1 · arm64 · trixie-backports
  Affected
  dsa · linux · debian · 13
- 6.12.101-1 · amd64 · trixie-security · Historical version
  Affected
  dsa · linux · debian · 13
- 6.12.105-1 · amd64 · trixie-security · Historical version
  Affected
  dsa · linux · debian · 13
- 6.12.107-1 · amd64 · trixie-security · Historical version
  Affected
  dsa · linux · debian · 13
- 6.12.107-1 · arm64 · trixie-security
  Affected
  dsa · linux · debian · 13
- 6.12.111-1 · amd64 · trixie-security · Historical version
  Affected
  dsa · linux · debian · 13
- 6.12.113-1 · amd64 · trixie-security
  Affected
  dsa · linux · debian · 13
[libcpupower-dev]Affected
Source package: [linux]
Details (10)
- 6.12.94-1 · amd64 · trixie
  Affected
  dsa · linux · debian · 13
- 6.12.94-1 · arm64 · trixie
  Affected
  dsa · linux · debian · 13
- 7.1.8-1~bpo13+1 · amd64 · trixie-backports
  Affected
  dsa · linux · debian · 13
- 7.1.8-1~bpo13+1 · arm64 · trixie-backports
  Affected
  dsa · linux · debian · 13
- 6.12.101-1 · amd64 · trixie-security · Historical version
  Affected
  dsa · linux · debian · 13
- 6.12.105-1 · amd64 · trixie-security · Historical version
  Affected
  dsa · linux · debian · 13
- 6.12.107-1 · amd64 · trixie-security · Historical version
  Affected
  dsa · linux · debian · 13
- 6.12.107-1 · arm64 · trixie-security
  Affected
  dsa · linux · debian · 13
- 6.12.111-1 · amd64 · trixie-security · Historical version
  Affected
  dsa · linux · debian · 13
- 6.12.113-1 · amd64 · trixie-security
  Affected
  dsa · linux · debian · 13
[linux-base-6.18.12+deb13-amd64]Affected
Source package: [linux]
Details (1)
- 6.18.12-1~bpo13+1 · amd64 · trixie-backports
  Affected
  dsa · linux · debian · 13
[linux-base-6.18.12+deb13-arm64]Affected
Source package: [linux]
Details (1)
- 6.18.12-1~bpo13+1 · arm64 · trixie-backports
  Affected
  dsa · linux · debian · 13
[linux-base-6.18.12+deb13-arm64-16k]Affected
Source package: [linux]
Details (1)
- 6.18.12-1~bpo13+1 · arm64 · trixie-backports
  Affected
  dsa · linux · debian · 13
[linux-base-6.18.12+deb13-cloud-amd64]Affected
Source package: [linux]
Details (1)
- 6.18.12-1~bpo13+1 · amd64 · trixie-backports
  Affected
  dsa · linux · debian · 13
[linux-base-6.18.12+deb13-cloud-arm64]Affected
Source package: [linux]
Details (1)
- 6.18.12-1~bpo13+1 · arm64 · trixie-backports
  Affected
  dsa · linux · debian · 13
[linux-base-6.18.12+deb13-rt-amd64]Affected
Source package: [linux]
Details (1)
- 6.18.12-1~bpo13+1 · amd64 · trixie-backports
  Affected
  dsa · linux · debian · 13
[linux-base-6.18.12+deb13-rt-arm64]Affected
Source package: [linux]
Details (1)
- 6.18.12-1~bpo13+1 · arm64 · trixie-backports
  Affected
  dsa · linux · debian · 13
[linux-base-6.18.15+deb13-amd64]Affected
Source package: [linux]
Details (1)
- 6.18.15-1~bpo13+1 · amd64 · trixie-backports
  Affected
  dsa · linux · debian · 13
[linux-base-6.18.15+deb13-arm64]Affected
Source package: [linux]
Details (1)
- 6.18.15-1~bpo13+1 · arm64 · trixie-backports
  Affected
  dsa · linux · debian · 13
[linux-base-6.18.15+deb13-arm64-16k]Affected
Source package: [linux]
Details (1)
- 6.18.15-1~bpo13+1 · arm64 · trixie-backports
  Affected
  dsa · linux · debian · 13
[linux-base-6.18.15+deb13-cloud-amd64]Affected
Source package: [linux]
Details (1)
- 6.18.15-1~bpo13+1 · amd64 · trixie-backports
  Affected
  dsa · linux · debian · 13
[linux-base-6.18.15+deb13-cloud-arm64]Affected
Source package: [linux]
Details (1)
- 6.18.15-1~bpo13+1 · arm64 · trixie-backports
  Affected
  dsa · linux · debian · 13
[linux-base-6.18.15+deb13-rt-amd64]Affected
Source package: [linux]
Details (1)
- 6.18.15-1~bpo13+1 · amd64 · trixie-backports
  Affected
  dsa · linux · debian · 13
[linux-base-6.18.15+deb13-rt-arm64]Affected
Source package: [linux]
Details (1)
- 6.18.15-1~bpo13+1 · arm64 · trixie-backports
  Affected
  dsa · linux · debian · 13
[linux-base-6.18.5+deb13-amd64]Affected
Source package: [linux]
Details (1)
- 6.18.5-1~bpo13+1 · amd64 · trixie-backports
  Affected
  dsa · linux · debian · 13

Next results

Observed: Oct 27, 2026, 4:01:46 AM UTC

References

[Debian Security Tracker] · [OSV Package Vulnerability Database]