CVE-2024-26773

一、漏洞信息
漏洞编号：CVE-2024-26773
漏洞归属组件：kernel
漏洞归属的版本：4.19.140,4.19.194,4.19.90,5.10.0,6.1.0,6.1.14,6.1.19,6.1.5,6.1.6,6.1.8,6.4.0
CVSS V2.0分值：
BaseScore：0.0 Low
Vector：CVSS：2.0/
漏洞简述：
In the Linux kernel, the following vulnerability has been resolved:ext4: avoid allocating blocks from corrupted group in ext4_mb_try_best_found()Determine if the group block bitmap is corrupted before using ac_b_ex inext4_mb_try_best_found() to avoid allocating blocks from a group with acorrupted block bitmap in the following concurrency and making thesituation worse.ext4_mb_regular_allocator ext4_lock_group(sb, group) ext4_mb_good_group // check if the group bbitmap is corrupted ext4_mb_complex_scan_group // Scan group gets ac_b_ex but doesn t use it ext4_unlock_group(sb, group) ext4_mark_group_bitmap_corrupted(group) // The block bitmap was corrupted during // the group unlock gap. ext4_mb_try_best_found ext4_lock_group(ac->ac_sb, group) ext4_mb_use_best_found mb_mark_used // Allocating blocks in block bitmap corrupted group
漏洞公开时间：2024-04-04 01:15:53
漏洞创建时间：2024-04-04 02:16:47
漏洞详情参考链接：
https://nvd.nist.gov/vuln/detail/CVE-2024-26773

更多参考(点击展开)

参考来源	参考链接	来源链接
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/0184747b552d6b5a14db3b7fcc3b792ce64dedd1
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/21f8cfe79f776287459343e9cfa6055af61328ea
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/260fc96283c0f594de18a1b045faf6d8fb42874d
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/4530b3660d396a646aad91a787b6ab37cf604b53
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/4c21fa60a6f4606f6214a38f50612b17b2f738f5
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/927794a02169778c9c2e7b25c768ab3ea8c1dc03
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/a2576ae9a35c078e488f2c573e9e6821d651fbbe
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/f97e75fa4e12b0aa0224e83fcbda8853ac2adf36
suse_bugzilla	http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2024-26773	https://bugzilla.suse.com/show_bug.cgi?id=1222618
suse_bugzilla	https://www.cve.org/CVERecord?id=CVE-2024-26773	https://bugzilla.suse.com/show_bug.cgi?id=1222618
suse_bugzilla	https://git.kernel.org/stable/c/0184747b552d6b5a14db3b7fcc3b792ce64dedd1	https://bugzilla.suse.com/show_bug.cgi?id=1222618
suse_bugzilla	https://git.kernel.org/stable/c/21f8cfe79f776287459343e9cfa6055af61328ea	https://bugzilla.suse.com/show_bug.cgi?id=1222618
suse_bugzilla	https://git.kernel.org/stable/c/260fc96283c0f594de18a1b045faf6d8fb42874d	https://bugzilla.suse.com/show_bug.cgi?id=1222618
suse_bugzilla	https://git.kernel.org/stable/c/4530b3660d396a646aad91a787b6ab37cf604b53	https://bugzilla.suse.com/show_bug.cgi?id=1222618
suse_bugzilla	https://git.kernel.org/stable/c/4c21fa60a6f4606f6214a38f50612b17b2f738f5	https://bugzilla.suse.com/show_bug.cgi?id=1222618
suse_bugzilla	https://git.kernel.org/stable/c/927794a02169778c9c2e7b25c768ab3ea8c1dc03	https://bugzilla.suse.com/show_bug.cgi?id=1222618
suse_bugzilla	https://git.kernel.org/stable/c/a2576ae9a35c078e488f2c573e9e6821d651fbbe	https://bugzilla.suse.com/show_bug.cgi?id=1222618
suse_bugzilla	https://git.kernel.org/stable/c/f97e75fa4e12b0aa0224e83fcbda8853ac2adf36	https://bugzilla.suse.com/show_bug.cgi?id=1222618
suse_bugzilla	https://bugzilla.redhat.com/show_bug.cgi?id=2273236	https://bugzilla.suse.com/show_bug.cgi?id=1222618
suse_bugzilla	https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2024/CVE-2024-26773.mbox	https://bugzilla.suse.com/show_bug.cgi?id=1222618
redhat_bugzilla	https://lore.kernel.org/linux-cve-announce/2024040308-CVE-2024-26773-a314@gregkh/T	https://bugzilla.redhat.com/show_bug.cgi?id=2273236
ubuntu	https://git.kernel.org/linus/4530b3660d396a646aad91a787b6ab37cf604b53 (6.8-rc3)	https://ubuntu.com/security/CVE-2024-26773
ubuntu	https://git.kernel.org/stable/c/21f8cfe79f776287459343e9cfa6055af61328ea	https://ubuntu.com/security/CVE-2024-26773
ubuntu	https://git.kernel.org/stable/c/260fc96283c0f594de18a1b045faf6d8fb42874d	https://ubuntu.com/security/CVE-2024-26773
ubuntu	https://git.kernel.org/stable/c/927794a02169778c9c2e7b25c768ab3ea8c1dc03	https://ubuntu.com/security/CVE-2024-26773
ubuntu	https://git.kernel.org/stable/c/4c21fa60a6f4606f6214a38f50612b17b2f738f5	https://ubuntu.com/security/CVE-2024-26773
ubuntu	https://git.kernel.org/stable/c/f97e75fa4e12b0aa0224e83fcbda8853ac2adf36	https://ubuntu.com/security/CVE-2024-26773
ubuntu	https://git.kernel.org/stable/c/0184747b552d6b5a14db3b7fcc3b792ce64dedd1	https://ubuntu.com/security/CVE-2024-26773
ubuntu	https://git.kernel.org/stable/c/a2576ae9a35c078e488f2c573e9e6821d651fbbe	https://ubuntu.com/security/CVE-2024-26773
ubuntu	https://git.kernel.org/stable/c/4530b3660d396a646aad91a787b6ab37cf604b53	https://ubuntu.com/security/CVE-2024-26773
ubuntu	https://www.cve.org/CVERecord?id=CVE-2024-26773	https://ubuntu.com/security/CVE-2024-26773
ubuntu	https://nvd.nist.gov/vuln/detail/CVE-2024-26773	https://ubuntu.com/security/CVE-2024-26773
ubuntu	https://launchpad.net/bugs/cve/CVE-2024-26773	https://ubuntu.com/security/CVE-2024-26773
ubuntu	https://security-tracker.debian.org/tracker/CVE-2024-26773	https://ubuntu.com/security/CVE-2024-26773
debian		https://security-tracker.debian.org/tracker/CVE-2024-26773
ubuntu	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-26773	https://ubuntu.com/security/CVE-2024-26773

漏洞分析指导链接：
https://gitee.com/openeuler/cve-manager/blob/master/cve-vulner-manager/doc/md/manual.md
漏洞数据来源:
openBrain开源漏洞感知系统
漏洞补丁信息：

详情(点击展开)

影响的包	修复版本	修复补丁	问题引入补丁	来源
linux		https://git.kernel.org/linus/4530b3660d396a646aad91a787b6ab37cf604b53	https://git.kernel.org/linus/1da177e4c3f41524e886b7f1b8a0c1fc7321cac2	ubuntu

二、漏洞分析结构反馈
影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:ext4: avoid allocating blocks from corrupted group in ext4_mb_try_best_found()Determine if the group block bitmap is corrupted before using ac_b_ex inext4_mb_try_best_found() to avoid allocating blocks from a group with acorrupted block bitmap in the following concurrency and making thesituation worse.ext4_mb_regular_allocator ext4_lock_group(sb, group) ext4_mb_good_group // check if the group bbitmap is corrupted ext4_mb_complex_scan_group // Scan group gets ac_b_ex but doesn t use it ext4_unlock_group(sb, group) ext4_mark_group_bitmap_corrupted(group) // The block bitmap was corrupted during // the group unlock gap. ext4_mb_try_best_found ext4_lock_group(ac->ac_sb, group) ext4_mb_use_best_found mb_mark_used // Allocating blocks in block bitmap corrupted group
openEuler评分：
5.5
Vector：CVSS：2.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
受影响版本排查(受影响/不受影响)：
1.openEuler-20.03-LTS-SP1(4.19.90):受影响
2.openEuler-20.03-LTS-SP4(4.19.90):受影响
3.openEuler-22.03-LTS(5.10.0):受影响
4.openEuler-22.03-LTS-SP1(5.10.0):受影响
5.openEuler-22.03-LTS-SP2(5.10.0):受影响
6.openEuler-22.03-LTS-SP3(5.10.0):受影响
7.master(6.1.0):不受影响
8.openEuler-22.03-LTS-Next(5.10.0):不受影响
9.openEuler-24.03-LTS:不受影响
10.openEuler-24.03-LTS-Next:不受影响

修复是否涉及abi变化(是/否)：
1.openEuler-20.03-LTS-SP1(4.19.90):否
2.openEuler-20.03-LTS-SP4(4.19.90):否
3.openEuler-22.03-LTS(5.10.0):否
4.openEuler-22.03-LTS-SP1(5.10.0):否
5.openEuler-22.03-LTS-SP2(5.10.0):否
6.openEuler-22.03-LTS-SP3(5.10.0):否
7.master(6.1.0):否
8.openEuler-22.03-LTS-Next(5.10.0):否
9.openEuler-24.03-LTS:否
10.openEuler-24.03-LTS-Next:否

三、漏洞修复
安全公告链接：https://www.openeuler.org/zh/security/safety-bulletin/detail/?id=openEuler-SA-2024-1541

Hi openeuler-ci-bot, welcome to the openEuler Community.
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If you have any questions, please contact the SIG: Kernel, and any of the maintainers.

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issue处理注意事项:
1. 当前issue受影响的分支提交pr时, 须在pr描述中填写当前issue编号进行关联, 否则无法关闭当前issue;
2. 模板内容需要填写完整, 无论是受影响或者不受影响都需要填写完整内容,未引入的分支不需要填写, 否则无法关闭当前issue;
3. 以下为模板中需要填写完整的内容, 请复制到评论区回复, 注: 内容的标题名称(影响性分析说明, openEuler评分, 受影响版本排查(受影响/不受影响), 修复是否涉及abi变化(是/否))不能省略,省略后cve-manager将无法正常解析填写内容.

影响性分析说明:

openEuler评分: (评分和向量)

受影响版本排查(受影响/不受影响):
1.master(6.1.0):
2.openEuler-20.03-LTS-SP1(4.19.90):
3.openEuler-20.03-LTS-SP4:
4.openEuler-22.03-LTS(5.10.0):
5.openEuler-22.03-LTS-Next(5.10.0):
6.openEuler-22.03-LTS-SP1(5.10.0):
7.openEuler-22.03-LTS-SP2(5.10.0):
8.openEuler-22.03-LTS-SP3:
9.openEuler-24.03-LTS:
10.openEuler-24.03-LTS-Next:

修复是否涉及abi变化(是/否)：
1.master(6.1.0):
2.openEuler-20.03-LTS-SP1(4.19.90):
3.openEuler-20.03-LTS-SP4:
4.openEuler-22.03-LTS(5.10.0):
5.openEuler-22.03-LTS-Next(5.10.0):
6.openEuler-22.03-LTS-SP1(5.10.0):
7.openEuler-22.03-LTS-SP2(5.10.0):
8.openEuler-22.03-LTS-SP3:
9.openEuler-24.03-LTS:
10.openEuler-24.03-LTS-Next:

issue处理具体操作请参考:
https://gitee.com/openeuler/cve-manager/blob/master/cve-vulner-manager/doc/md/manual.md
pr关联issue具体操作请参考:
https://gitee.com/help/articles/4142

参考网址	关联pr	状态	补丁链接
https://nvd.nist.gov/vuln/detail/CVE-2024-26773	None	None	https://git.kernel.org/stable/c/927794a02169778c9c2e7b25c768ab3ea8c1dc03 https://git.kernel.org/stable/c/a2576ae9a35c078e488f2c573e9e6821d651fbbe https://git.kernel.org/stable/c/f97e75fa4e12b0aa0224e83fcbda8853ac2adf36 https://git.kernel.org/stable/c/260fc96283c0f594de18a1b045faf6d8fb42874d https://git.kernel.org/stable/c/4c21fa60a6f4606f6214a38f50612b17b2f738f5 https://git.kernel.org/stable/c/0184747b552d6b5a14db3b7fcc3b792ce64dedd1 https://git.kernel.org/stable/c/21f8cfe79f776287459343e9cfa6055af61328ea https://git.kernel.org/stable/c/4530b3660d396a646aad91a787b6ab37cf604b53
https://ubuntu.com/security/CVE-2024-26773	None	None	https://discourse.ubuntu.com/c/ubuntu-pro
https://www.opencve.io/cve/CVE-2024-26773	None	None	https://git.kernel.org/stable/c/927794a02169778c9c2e7b25c768ab3ea8c1dc03 https://git.kernel.org/stable/c/a2576ae9a35c078e488f2c573e9e6821d651fbbe https://git.kernel.org/stable/c/f97e75fa4e12b0aa0224e83fcbda8853ac2adf36 https://git.kernel.org/stable/c/260fc96283c0f594de18a1b045faf6d8fb42874d https://git.kernel.org/stable/c/4c21fa60a6f4606f6214a38f50612b17b2f738f5 https://git.kernel.org/stable/c/0184747b552d6b5a14db3b7fcc3b792ce64dedd1 https://git.kernel.org/stable/c/21f8cfe79f776287459343e9cfa6055af61328ea https://git.kernel.org/stable/c/4530b3660d396a646aad91a787b6ab37cf604b53
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2024-26773
https://security-tracker.debian.org/tracker/CVE-2024-26773

说明：补丁链接仅供初步排查参考，实际可用性请人工再次确认，补丁下载验证可使用CVE补丁工具。
若补丁不准确，烦请在此issue下评论 '/report-patch 参考网址补丁链接1,补丁链接2' 反馈正确信息，便于我们不断优化工具，不胜感激。
如 /report-patch https://security-tracker.debian.org/tracker/CVE-2021-3997 https://github.com/systemd/systemd/commit/5b1cf7a9be37e20133c0208005274ce4a5b5c6a1

@ci-robot 请确认分支: master,openEuler-20.03-LTS-SP1,openEuler-20.03-LTS-SP4,openEuler-22.03-LTS,openEuler-22.03-LTS-Next,openEuler-22.03-LTS-SP1,openEuler-22.03-LTS-SP2,openEuler-22.03-LTS-SP3,openEuler-24.03-LTS,openEuler-24.03-LTS-Next 受影响/不受影响.
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请确认分支信息是否填写完整,否则将无法关闭当前issue.

@zhangchangzhong 请确认分支: master,openEuler-20.03-LTS-SP1,openEuler-20.03-LTS-SP4,openEuler-22.03-LTS,openEuler-22.03-LTS-Next,openEuler-22.03-LTS-SP1,openEuler-22.03-LTS-SP2,openEuler-22.03-LTS-SP3,openEuler-24.03-LTS,openEuler-24.03-LTS-Next 受影响/不受影响.
请确认分支信息是否填写完整,否则将无法关闭当前issue.

@chenyi 请确认分支: master,openEuler-20.03-LTS-SP1,openEuler-20.03-LTS-SP4,openEuler-22.03-LTS,openEuler-22.03-LTS-Next,openEuler-22.03-LTS-SP1,openEuler-22.03-LTS-SP2,openEuler-22.03-LTS-SP3,openEuler-24.03-LTS,openEuler-24.03-LTS-Next 受影响/不受影响.
请确认分支信息是否填写完整,否则将无法关闭当前issue.

CVE-2024-26773

影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:

ext4: avoid allocating blocks from corrupted group in ext4_mb_try_best_found()

Determine if the group block bitmap is corrupted before using ac_b_ex in
ext4_mb_try_best_found() to avoid allocating blocks from a group with a
corrupted block bitmap in the following concurrency and making the
situation worse.

ext4_mb_regular_allocator
ext4_lock_group(sb, group)
ext4_mb_good_group
// check if the group bbitmap is corrupted
ext4_mb_complex_scan_group
// Scan group gets ac_b_ex but doesn't use it
ext4_unlock_group(sb, group)
ext4_mark_group_bitmap_corrupted(group)
// The block bitmap was corrupted during
// the group unlock gap.
ext4_mb_try_best_found
ext4_lock_group(ac->ac_sb, group)
ext4_mb_use_best_found
mb_mark_used
// Allocating blocks in block bitmap corrupted group

openEuler评分:(评分和向量)
5.5
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

受影响版本排查(受影响/不受影响):
1.openEuler-20.03-LTS-SP1:受影响
2.openEuler-20.03-LTS-SP4:受影响
3.openEuler-22.03-LTS:受影响
4.openEuler-22.03-LTS-SP1:受影响
5.openEuler-22.03-LTS-SP2:受影响
6.openEuler-22.03-LTS-SP3:受影响
7.master(6.1.0):不受影响
8.openEuler-22.03-LTS-Next:不受影响
9.openEuler-24.03-LTS:不受影响
10.openEuler-24.03-LTS-Next:不受影响

修复是否涉及abi变化(是/否)：
1.openEuler-20.03-LTS-SP1(4.19.90):否
2.openEuler-20.03-LTS-SP4:否
3.openEuler-22.03-LTS:否
4.openEuler-22.03-LTS-SP1:否
5.openEuler-22.03-LTS-SP2:否
6.openEuler-22.03-LTS-SP3:否
7.master(6.1.0):否
8.openEuler-22.03-LTS-Next:否
9.openEuler-24.03-LTS:否
10.openEuler-24.03-LTS-Next:否

===========================================================

@sanglipeng 经过 cve-manager 解析, 已分析的内容如下表所示:

状态	需分析	内容
已分析	1.影响性分析说明	In the Linux kernel, the following vulnerability has been resolved:ext4: avoid allocating blocks from corrupted group in ext4_mb_try_best_found()Determine if the group block bitmap is corrupted before using ac_b_ex inext4_mb_try_best_found() to avoid allocating blocks from a group with acorrupted block bitmap in the following concurrency and making thesituation worse.ext4_mb_regular_allocator ext4_lock_group(sb, group) ext4_mb_good_group // check if the group bbitmap is corrupted ext4_mb_complex_scan_group // Scan group gets ac_b_ex but doesn't use it ext4_unlock_group(sb, group) ext4_mark_group_bitmap_corrupted(group) // The block bitmap was corrupted during // the group unlock gap. ext4_mb_try_best_found ext4_lock_group(ac->ac_sb, group) ext4_mb_use_best_found mb_mark_used // Allocating blocks in block bitmap corrupted group
已分析	2.openEulerScore	5.5
已分析	3.openEulerVector	AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
已分析	4.受影响版本排查	openEuler-20.03-LTS-SP1:受影响,openEuler-20.03-LTS-SP4:受影响,openEuler-22.03-LTS:受影响,openEuler-22.03-LTS-SP1:受影响,openEuler-22.03-LTS-SP2:受影响,openEuler-22.03-LTS-SP3:受影响,master:不受影响,openEuler-22.03-LTS-Next:不受影响,openEuler-24.03-LTS:不受影响,openEuler-24.03-LTS-Next:不受影响
已分析	5.修复是否涉及abi变化	openEuler-20.03-LTS-SP1:否,openEuler-20.03-LTS-SP4:否,openEuler-22.03-LTS:否,openEuler-22.03-LTS-SP1:否,openEuler-22.03-LTS-SP2:否,openEuler-22.03-LTS-SP3:否,master:否,openEuler-22.03-LTS-Next:否,openEuler-24.03-LTS:否,openEuler-24.03-LTS-Next:否

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src-openEuler / kernel

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src-openEuler / kernel .gitee-modal { width: 500px !important; }

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CVE-2024-26773

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