CVE-2026-22994— bpf: Fix reference count leak in bpf_prog_test_run_xdp()
Possible ATT&CK Techniques 1AI
T1499.002 · Service Exhaustion FloodAffected Version Matrix 12
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 1c194998252469cad00a08bd9ef0b99fd255c260< 368569bc546d3368ee9980ba79fc42fdff9a3365 | affected |
1c194998252469cad00a08bd9ef0b99fd255c260< 98676ee71fd4eafeb8be63c7f3f1905d40e03101 | affected | ||
1c194998252469cad00a08bd9ef0b99fd255c260< fb9ef40cccdbacce36029b305d0ef1e12e4fea38 | affected | ||
1c194998252469cad00a08bd9ef0b99fd255c260< 737be05a765761d7d7c9f7fe92274bd8e6f6951e | affected | ||
1c194998252469cad00a08bd9ef0b99fd255c260< ec69daabe45256f98ac86c651b8ad1b2574489a7 | affected | ||
5.18 | affected | ||
< 5.18 | unaffected | ||
6.1.161≤ 6.1.* | unaffected | ||
| … +4 more rows | |||
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I. Basic Information for CVE-2026-22994
Vulnerability Information
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Vulnerability Title
bpf: Fix reference count leak in bpf_prog_test_run_xdp()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: bpf: Fix reference count leak in bpf_prog_test_run_xdp() syzbot is reporting unregister_netdevice: waiting for sit0 to become free. Usage count = 2 problem. A debug printk() patch found that a refcount is obtained at xdp_convert_md_to_buff() from bpf_prog_test_run_xdp(). According to commit ec94670fcb3b ("bpf: Support specifying ingress via xdp_md context in BPF_PROG_TEST_RUN"), the refcount obtained by xdp_convert_md_to_buff() will be released by xdp_convert_buff_to_md(). Therefore, we can consider that the error handling path introduced by commit 1c1949982524 ("bpf: introduce frags support to bpf_prog_test_run_xdp()") forgot to call xdp_convert_buff_to_md().
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于引用计数泄漏，可能导致网络设备无法释放。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2026-22994
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · Linux · 2026-01-23 · 34 CVEs total
| CVE-2026-22984 | 9.8 CRITICAL | libceph: prevent potential out-of-bounds reads in handle_auth_done() |
| CVE-2025-71159 | 9.8 CRITICAL | btrfs: fix use-after-free warning in btrfs_get_or_create_delayed_node() |
| CVE-2026-22980 | 7.8 HIGH | nfsd: provide locking for v4_end_grace |
| CVE-2025-71145 | 7.8 HIGH | usb: phy: isp1301: fix non-OF device reference imbalance |
| CVE-2025-71158 | 7.8 HIGH | gpio: mpsse: ensure worker is torn down |
| CVE-2026-22988 | 7.8 HIGH | arp: do not assume dev_hard_header() does not change skb->head |
| CVE-2025-71155 | 7.8 HIGH | KVM: s390: Fix gmap_helper_zap_one_page() again |
| CVE-2025-71146 | 7.5 HIGH | netfilter: nf_conncount: fix leaked ct in error paths |
| CVE-2025-71161 | 7.5 HIGH | dm-verity: disable recursive forward error correction |
| CVE-2026-22990 | 7.5 HIGH | libceph: replace overzealous BUG_ON in osdmap_apply_incremental() |
| CVE-2026-22991 | 7.5 HIGH | libceph: make free_choose_arg_map() resilient to partial allocation |
| CVE-2026-22992 | 7.5 HIGH | libceph: return the handler error from mon_handle_auth_done() |
| CVE-2025-71150 | 7.5 HIGH | ksmbd: Fix refcount leak when invalid session is found on session lookup |
| CVE-2026-22989 | nfsd: check that server is running in unlock_filesystem | |
| CVE-2026-22987 | net/sched: act_api: avoid dereferencing ERR_PTR in tcf_idrinfo_destroy | |
| CVE-2026-22986 | gpiolib: fix race condition for gdev->srcu | |
| CVE-2026-22985 | idpf: Fix RSS LUT NULL pointer crash on early ethtool operations | |
| CVE-2026-22993 | idpf: Fix RSS LUT NULL ptr issue after soft reset | |
| CVE-2026-22995 | ublk: fix use-after-free in ublk_partition_scan_work | |
| CVE-2026-22983 | net: do not write to msg_get_inq in callee |
Showing top 20 of 34 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Linux
- CVE-2026-74579
netfilter: nft_payload: fix mask build for partial field off - CVE-2026-74578
crypto: algif_skcipher - force synchronous processing on tre - CVE-2026-74577
net: mpls: initialize rtm_tos in mpls_getroute() - CVE-2026-74576
mm/slab: prevent unbounded recursion in free path with new k - CVE-2026-74574
dmaengine: idxd: fix fdev setup failure cleanup in idxd_cdev
Same vendor: Linux
- CVE-2026-74579
netfilter: nft_payload: fix mask build for partial field off - CVE-2026-74578
crypto: algif_skcipher - force synchronous processing on tre - CVE-2026-74577
net: mpls: initialize rtm_tos in mpls_getroute() - CVE-2026-74576
mm/slab: prevent unbounded recursion in free path with new k - CVE-2026-74574
dmaengine: idxd: fix fdev setup failure cleanup in idxd_cdev
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