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CVE-2026-22990— libceph: replace overzealous BUG_ON in osdmap_apply_incremental()

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

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osdmap_apply_incremental存在过于严格的BUG_ON断言，可能导致崩溃。

CVSS 7.5 · High EPSS 0.37% · P30

Affected Version Matrix 16

VendorProduct Version RangeStatus
Linux Linux f24e9980eb860d8600cbe5ef3d2fd9295320d229< 9aa0b0c14cefece078286d78b97d4c09685e372d affected
f24e9980eb860d8600cbe5ef3d2fd9295320d229< 4b106fbb1c7b841cd402abd83eb2447164c799ea affected
f24e9980eb860d8600cbe5ef3d2fd9295320d229< 6afd2a4213524bc742b709599a3663aeaf77193c affected
f24e9980eb860d8600cbe5ef3d2fd9295320d229< d3613770e2677683e65d062da5e31f48c409abe9 affected
f24e9980eb860d8600cbe5ef3d2fd9295320d229< 6c6cec3db3b418c4fdf815731bc39e46dff75e1b affected
f24e9980eb860d8600cbe5ef3d2fd9295320d229< 6348d70af847b79805374fe628d3809a63fd7df3 affected
f24e9980eb860d8600cbe5ef3d2fd9295320d229< e00c3f71b5cf75681dbd74ee3f982a99cb690c2b affected
2.6.34 affected
… +8 more rows
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I. Basic Information for CVE-2026-22990

Vulnerability Information
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Vulnerability Title
libceph: replace overzealous BUG_ON in osdmap_apply_incremental()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: libceph: replace overzealous BUG_ON in osdmap_apply_incremental() If the osdmap is (maliciously) corrupted such that the incremental osdmap epoch is different from what is expected, there is no need to BUG. Instead, just declare the incremental osdmap to be invalid.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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osdmap_apply_incremental存在过于严格的BUG_ON断言，可能导致崩溃。
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

Vendor Product Affected Versions CPE Subscribe
Linux Linux f24e9980eb860d8600cbe5ef3d2fd9295320d229 ~ 9aa0b0c14cefece078286d78b97d4c09685e372d -
Linux Linux 2.6.34 -

II. Public POCs for CVE-2026-22990

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III. Intelligence Information for CVE-2026-22990

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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-2026-22991 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-2026-22993 idpf: Fix RSS LUT NULL ptr issue after soft reset
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-2026-22994 bpf: Fix reference count leak in bpf_prog_test_run_xdp()
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 &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-22990

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