# CVE-2026-98058: CVE-2026-98058 Status: published. Published: 2026-09-25. Updated: 2026-11-03. In the Linux kernel, the following vulnerability has been resolved: bpf: Mark syscall helpers as sleepable bpf_sys_bpf() executes the bpf(2) syscall body, which can take mutexes, allocate with GFP_KERNEL, and wait for an RCU grace period. bpf_sys_close() reaches close_fd() and filp_close(), which can sleep as well. Both helpers are limited to BPF_PROG_TYPE_SYSCALL, whose main program is sleepable. That does not make every callback sleepable: a syscall program can register a bpf_timer callback, and the verifier checks that callback in a non-sleepable context while retaining the syscall helper set. Without .might_sleep on the prototypes, such a callback can invoke bpf_sys_bpf() from hrtimer softirq context and trigger a scheduling-while-atomic failure. bpf_sys_close() is exposed through the same missing context check. Set .might_sleep on both prototypes so the existing helper-context check rejects them from timer callbacks and other atomic regions. Calls from the sleepable main body remain valid. ## Remediation - fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67) — https://git.kernel.org/stable/c/3408e98f06ce06ea6a58ca6c39da9c23f0029c06 - fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67) — https://git.kernel.org/stable/c/65f636322ac402add6046c68e9ece77b9ffd71c9 - fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67) — https://git.kernel.org/stable/c/9496d857205e60241034b798d7745ff8830ba599 - fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67) — https://git.kernel.org/stable/c/d05524794240b52fdc3b6c1220dd05505715824d - fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67) — https://git.kernel.org/stable/c/d8cfe9f71d302970ae393616960f2b3021d2b3b0 ## Affected products and versions - linux / linux_kernel: ≥ 5.14; < 6.6.160 (affected, custom). Source: NVD - linux / linux_kernel: ≥ 6.7; < 6.12.114 (affected, custom). Source: NVD - linux / linux_kernel: ≥ 6.13; < 6.18.57 (affected, custom). Source: NVD - linux / linux_kernel: ≥ 6.19; < 7.2.7 (affected, custom). Source: NVD - linux / linux_kernel: 7.3 (affected, custom). Source: NVD ## NVD configuration conditions Affected CPE matches depend on the following AND/OR and negation conditions: ```json [ { "negate": false, "nodes": [ { "cpeMatch": [ { "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "6.6.160", "versionStartIncluding": "5.14", "vulnerable": true }, { "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "6.12.114", "versionStartIncluding": "6.7", "vulnerable": true }, { "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "6.18.57", "versionStartIncluding": "6.13", "vulnerable": true }, { "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "7.2.7", "versionStartIncluding": "6.19", "vulnerable": true }, { "criteria": "cpe:2.3:o:linux:linux_kernel:7.3:rc1:*:*:*:*:*:*", "vulnerable": true } ], "negate": false, "operator": "OR" } ], "operator": "OR" } ] ``` ## Severity and prioritization - CVSS 3.1: 5.5 (medium); CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H; source: NVD: nvd@nist.gov - CISA KEV: No listing in collected sources - EPSS: Not available - SSVC: Not available - Weaknesses: CWE-362 ## Exploit evidence No exploit evidence in collected sources. This is not proof of no exploitation. ## References - https://git.kernel.org/stable/c/3408e98f06ce06ea6a58ca6c39da9c23f0029c06 (416baaa9-dc9f-4396-8d5f-8c081fb06d67; Patch) - https://git.kernel.org/stable/c/65f636322ac402add6046c68e9ece77b9ffd71c9 (416baaa9-dc9f-4396-8d5f-8c081fb06d67; Patch) - https://git.kernel.org/stable/c/9496d857205e60241034b798d7745ff8830ba599 (416baaa9-dc9f-4396-8d5f-8c081fb06d67; Patch) - https://git.kernel.org/stable/c/d05524794240b52fdc3b6c1220dd05505715824d (416baaa9-dc9f-4396-8d5f-8c081fb06d67; Patch) - https://git.kernel.org/stable/c/d8cfe9f71d302970ae393616960f2b3021d2b3b0 (416baaa9-dc9f-4396-8d5f-8c081fb06d67; Patch) ## Provenance - NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-98058; retrieved 2026-11-03; source updated 2026-11-03 Revision: b5ab90d5163476caf9cee1828663cd4cb1efeb3c6058845b4d1a08e73aa3f6d1 Canonical: https://y2.dev/cve/CVE-2026-98058 ## Agent and API access Public CVE pages, Markdown, and JSON are free to read without an account or API key. - Public catalog: https://y2.dev/cve/index.json. 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