Answer in brief
CVE-2026-74259 records a Unknown severity vulnerability in cifs: remove all cifs files before kill super. 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.
A CVSS score is not reported in the current record. 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.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=708c276f516d27beaded7f372ac8111cee43926c <55fb9581986141659002264fdc75cef307811eb8 || >=0629a1a187e424373364d681b42b101894bdb548 <4465ebe67d89345954bb3622b25dd13e06f9d367 || >=0e4b8faaaebe3137bec5723ef2b3cb0437fb38fd <3baedc9b2f53e6a6ac57b16fdff0f9b954d9ca71 || >=f655467a9973f964b267871e5fef533ad5014494 <21303c4a2b7275e626c6b67de0f45f2d5b9bb3e7 || >=340cea84f691c5206561bb2e0147158fe02070be <7839f1817a0cb6c4ed5cfe25d04845c43380a129 || >=340cea84f691c5206561bb2e0147158fe02070be <6d9a4aaaa8b2612b5ef9d581e2f286a458b71ee1 || 30afc6ea72cc6cf7c8d579e79b64232801c38d08 || >=6.1.167 <6.1.178 || >=6.6.130 <6.6.145 || >=6.12.78 <6.12.97 || >=6.18.20 <6.18.40 || >=6.19.10 <6.20 | 55fb9581986141659002264fdc75cef307811eb8, 4465ebe67d89345954bb3622b25dd13e06f9d367, 3baedc9b2f53e6a6ac57b16fdff0f9b954d9ca71, 21303c4a2b7275e626c6b67de0f45f2d5b9bb3e7, 7839f1817a0cb6c4ed5cfe25d04845c43380a129, 6d9a4aaaa8b2612b5ef9d581e2f286a458b71ee1, 6.1.178, 6.6.145, 6.12.97, 6.18.40, 6.20 |
| Linux/Linuxgeneric | 7.0 | Not reported |
Published upstream
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 15, 2026
In the Linux kernel, the following vulnerability has been resolved: cifs: remove all cifs files before kill super Cifs files may be put into fileinfo_put_wq during umounting cifs. After umount done, cifsFileInfo_put_final is called, which cause following BUG: BUG: kernel NULL pointer dereference, address: 0000000000000000 ... [ 134.222152] list_lru_add+0x64/0x1a0 [ 134.222399] ? cifs_put_tcon+0x171/0x340 [cifs] [ 134.222772] d_lru_add+0x44/0x60 [ 134.222997] dput+0x1fc/0x210 [ 134.223213] cifsFileInfo_put_final+0x11a/0x140 [cifs] [ 134.223576] process_one_work+0x17c/0x320 [ 134.223843] worker_thread+0x188/0x280 [ 134.224084] ? __pfx_worker_thread+0x10/0x10 [ 134.224366] kthread+0xcc/0x100 [ 134.224576] ? __pfx_kthread+0x10/0x10 [ 134.224827] ret_from_fork+0x30/0x50 [ 134.225063] ? __pfx_kthread+0x10/0x10 [ 134.225328] ret_from_fork_asm+0x1b/0x30 This can be reproduce by following: unshare -n bash -c " mkdir -p ${CIFS_MNT} ip netns attach root 1 ip link add eth0 type veth peer veth0 netns root ip link set eth0 up ip -n root link set veth0 up ip addr add 192.168.0.2/24 dev eth0 ip -n root addr add 192.168.0.1/24 dev veth0 ip route add default via 192.168.0.1 dev eth0 ip netns exec root sysctl net.ipv4.ip_forward=1 ip netns exec root iptables -t nat -A POSTROUTING -s 192.168.0.2 -o ${DEV} -j MASQUERADE mount -t cifs ${CIFS_PATH} ${CIFS_MNT} -o vers=3.0,sec=ntlmssp,credentials=${CIFS_CRED},rsize=65536,wsize=65536,cache=none,echo_interval=1 touch ${CIFS_MNT}/a.txt ip netns exec root iptables -t nat -D POSTROUTING -s 192.168.0.2 -o ${DEV} -j MASQUERADE " umount ${CIFS_MNT}
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2026-74259 records a Unknown severity vulnerability in cifs: remove all cifs files before kill super. 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.
A CVSS score is not reported in the current record. 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.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=708c276f516d27beaded7f372ac8111cee43926c <55fb9581986141659002264fdc75cef307811eb8 || >=0629a1a187e424373364d681b42b101894bdb548 <4465ebe67d89345954bb3622b25dd13e06f9d367 || >=0e4b8faaaebe3137bec5723ef2b3cb0437fb38fd <3baedc9b2f53e6a6ac57b16fdff0f9b954d9ca71 || >=f655467a9973f964b267871e5fef533ad5014494 <21303c4a2b7275e626c6b67de0f45f2d5b9bb3e7 || >=340cea84f691c5206561bb2e0147158fe02070be <7839f1817a0cb6c4ed5cfe25d04845c43380a129 || >=340cea84f691c5206561bb2e0147158fe02070be <6d9a4aaaa8b2612b5ef9d581e2f286a458b71ee1 || 30afc6ea72cc6cf7c8d579e79b64232801c38d08 || >=6.1.167 <6.1.178 || >=6.6.130 <6.6.145 || >=6.12.78 <6.12.97 || >=6.18.20 <6.18.40 || >=6.19.10 <6.20 | 55fb9581986141659002264fdc75cef307811eb8, 4465ebe67d89345954bb3622b25dd13e06f9d367, 3baedc9b2f53e6a6ac57b16fdff0f9b954d9ca71, 21303c4a2b7275e626c6b67de0f45f2d5b9bb3e7, 7839f1817a0cb6c4ed5cfe25d04845c43380a129, 6d9a4aaaa8b2612b5ef9d581e2f286a458b71ee1, 6.1.178, 6.6.145, 6.12.97, 6.18.40, 6.20 |
| Linux/Linuxgeneric | 7.0 | Not reported |
Published upstream
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 15, 2026
In the Linux kernel, the following vulnerability has been resolved: cifs: remove all cifs files before kill super Cifs files may be put into fileinfo_put_wq during umounting cifs. After umount done, cifsFileInfo_put_final is called, which cause following BUG: BUG: kernel NULL pointer dereference, address: 0000000000000000 ... [ 134.222152] list_lru_add+0x64/0x1a0 [ 134.222399] ? cifs_put_tcon+0x171/0x340 [cifs] [ 134.222772] d_lru_add+0x44/0x60 [ 134.222997] dput+0x1fc/0x210 [ 134.223213] cifsFileInfo_put_final+0x11a/0x140 [cifs] [ 134.223576] process_one_work+0x17c/0x320 [ 134.223843] worker_thread+0x188/0x280 [ 134.224084] ? __pfx_worker_thread+0x10/0x10 [ 134.224366] kthread+0xcc/0x100 [ 134.224576] ? __pfx_kthread+0x10/0x10 [ 134.224827] ret_from_fork+0x30/0x50 [ 134.225063] ? __pfx_kthread+0x10/0x10 [ 134.225328] ret_from_fork_asm+0x1b/0x30 This can be reproduce by following: unshare -n bash -c " mkdir -p ${CIFS_MNT} ip netns attach root 1 ip link add eth0 type veth peer veth0 netns root ip link set eth0 up ip -n root link set veth0 up ip addr add 192.168.0.2/24 dev eth0 ip -n root addr add 192.168.0.1/24 dev veth0 ip route add default via 192.168.0.1 dev eth0 ip netns exec root sysctl net.ipv4.ip_forward=1 ip netns exec root iptables -t nat -A POSTROUTING -s 192.168.0.2 -o ${DEV} -j MASQUERADE mount -t cifs ${CIFS_PATH} ${CIFS_MNT} -o vers=3.0,sec=ntlmssp,credentials=${CIFS_CRED},rsize=65536,wsize=65536,cache=none,echo_interval=1 touch ${CIFS_MNT}/a.txt ip netns exec root iptables -t nat -D POSTROUTING -s 192.168.0.2 -o ${DEV} -j MASQUERADE " umount ${CIFS_MNT}
Quoted source text, attributed separately from HOL analysis.