Answer in brief
CVE-2026-53089 records a High severity (CVSS 7.8) vulnerability in bpf: Fix use-after-free in offloaded map/prog info fill. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=675fc275a3a2d905535207237402c6d8dcb5fa4b <43d6848a2a6c92ccfd614d9f0bb6fd85b95dfa9d || >=675fc275a3a2d905535207237402c6d8dcb5fa4b <642943ae5bdacabc8109dc4a5e0ebb4a6b99ef3e || >=675fc275a3a2d905535207237402c6d8dcb5fa4b <fea55b034328feaafef75aee252f305e6f85a991 || >=675fc275a3a2d905535207237402c6d8dcb5fa4b <5662dac41a3442aa378d7c405164903eb109fc05 || >=675fc275a3a2d905535207237402c6d8dcb5fa4b <1a2dc103e16448d022a77ad5fc3234641436c4b7 || >=675fc275a3a2d905535207237402c6d8dcb5fa4b <85dc711f742b192eb97c0e00b521312f5a7a415e || >=675fc275a3a2d905535207237402c6d8dcb5fa4b <a51e7fbe94a87e236631a83973d4f558310b2cd2 || >=675fc275a3a2d905535207237402c6d8dcb5fa4b <a0c584fc18056709c8e047a82a6045d6c209f4ce | 43d6848a2a6c92ccfd614d9f0bb6fd85b95dfa9d, 642943ae5bdacabc8109dc4a5e0ebb4a6b99ef3e, fea55b034328feaafef75aee252f305e6f85a991, 5662dac41a3442aa378d7c405164903eb109fc05, 1a2dc103e16448d022a77ad5fc3234641436c4b7, 85dc711f742b192eb97c0e00b521312f5a7a415e, a51e7fbe94a87e236631a83973d4f558310b2cd2, a0c584fc18056709c8e047a82a6045d6c209f4ce |
| Linux/Linuxgeneric | 4.16 | Not reported |
Published upstream
Jun 24, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Sep 2, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jun 24, 2026
In the Linux kernel, the following vulnerability has been resolved: bpf: Fix use-after-free in offloaded map/prog info fill When querying info for an offloaded BPF map or program, bpf_map_offload_info_fill_ns() and bpf_prog_offload_info_fill_ns() obtain the network namespace with get_net(dev_net(offmap->netdev)). However, the associated netdev's netns may be racing with teardown during netns destruction. If the netns refcount has already reached 0, get_net() performs a refcount_t increment on 0, triggering: refcount_t: addition on 0; use-after-free. Although rtnl_lock and bpf_devs_lock ensure the netdev pointer remains valid, they cannot prevent the netns refcount from reaching zero. Fix this by using maybe_get_net() instead of get_net(). maybe_get_net() uses refcount_inc_not_zero() and returns NULL if the refcount is already zero, which causes ns_get_path_cb() to fail and the caller to return -ENOENT -- the correct behavior when the netns is being destroyed.
Quoted source text, attributed separately from HOL analysis.