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CVE-2024-26632— block: Fix iterating over an empty bio with bio_for_each_folio_all

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，该漏洞源于使用bio_for_each_folio_all迭代空的bio。

CVSS 7.8 · High EPSS 0.24% · P14

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation

Affected Version Matrix 10

VendorProduct Version RangeStatus
Linux Linux 640d1930bef4f87ec8d8d2b05f0f6edc1dfcf662< c6350b5cb78e9024c49eaee6fdb914ad2903a5fe affected
640d1930bef4f87ec8d8d2b05f0f6edc1dfcf662< a6bd8182137a12d22d3f2cee463271bdcb491659 affected
640d1930bef4f87ec8d8d2b05f0f6edc1dfcf662< ca3ede3f5893e2d26d4dbdef1eec28a8487fafde affected
640d1930bef4f87ec8d8d2b05f0f6edc1dfcf662< 7bed6f3d08b7af27b7015da8dc3acf2b9c1f21d7 affected
5.17 affected
< 5.17 unaffected
6.1.75≤ 6.1.* unaffected
6.6.14≤ 6.6.* unaffected
… +2 more rows
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I. Basic Information for CVE-2024-26632

Vulnerability Information
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Vulnerability Title
block: Fix iterating over an empty bio with bio_for_each_folio_all
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: block: Fix iterating over an empty bio with bio_for_each_folio_all If the bio contains no data, bio_first_folio() calls page_folio() on a NULL pointer and oopses. Move the test that we've reached the end of the bio from bio_next_folio() to bio_first_folio(). [axboe: add unlikely() to error case]
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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，该漏洞源于使用bio_for_each_folio_all迭代空的bio。
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 640d1930bef4f87ec8d8d2b05f0f6edc1dfcf662 ~ c6350b5cb78e9024c49eaee6fdb914ad2903a5fe -
Linux Linux 5.17 -

II. Public POCs for CVE-2024-26632

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III. Intelligence Information for CVE-2024-26632

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Other References for CVE-2024-26632 (4)

Same Patch Batch · Linux · 2024-03-18 · 21 CVEs total

CVE-2024-26641 8.6 HIGH ip6_tunnel: make sure to pull inner header in __ip6_tnl_rcv()
CVE-2024-26640 7.8 HIGH tcp: add sanity checks to rx zerocopy
CVE-2023-52612 7.8 HIGH crypto: scomp - fix req->dst buffer overflow
CVE-2024-26637 7.8 HIGH wifi: ath11k: rely on mac80211 debugfs handling for vif
CVE-2024-26631 7.8 HIGH ipv6: mcast: fix data-race in ipv6_mc_down / mld_ifc_work
CVE-2023-52616 7.8 HIGH crypto: lib/mpi - Fix unexpected pointer access in mpi_ec_init
CVE-2023-52614 7.8 HIGH PM / devfreq: Fix buffer overflow in trans_stat_show
CVE-2023-52610 7.5 HIGH net/sched: act_ct: fix skb leak and crash on ooo frags
CVE-2023-52615 hwrng: core - Fix page fault dead lock on mmap-ed hwrng
CVE-2024-26633 ip6_tunnel: fix NEXTHDR_FRAGMENT handling in ip6_tnl_parse_tlv_enc_lim()
CVE-2024-26634 net: fix removing a namespace with conflicting altnames
CVE-2024-26635 llc: Drop support for ETH_P_TR_802_2.
CVE-2023-52613 drivers/thermal/loongson2_thermal: Fix incorrect PTR_ERR() judgment
CVE-2024-26636 llc: make llc_ui_sendmsg() more robust against bonding changes
CVE-2024-26638 nbd: always initialize struct msghdr completely
CVE-2023-52617 PCI: switchtec: Fix stdev_release() crash after surprise hot remove
CVE-2023-52618 block/rnbd-srv: Check for unlikely string overflow
CVE-2023-52619 pstore/ram: Fix crash when setting number of cpus to an odd number
CVE-2023-52611 wifi: rtw88: sdio: Honor the host max_req_size in the RX path
CVE-2023-52609 binder: fix race between mmput() and do_exit()

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2024-26632

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